fixed issue #4, typos, added license, contributing

Author: cutterbuck

CONTRIBUTING.md

@@ -0,0 +1,37 @@
+# Contributing to Learn.co Curriculum
+
+We're really exited that you're about to contribute to the [open curriculum](https://learn.co/content-license) on [Learn.co](https://learn.co). If this is your first time contributing, please continue reading to learn how to make the most meaningful and useful impact possible.
+
+## Raising an Issue to Encourage a Contribution
+
+If you notice a problem with the curriculum that you believe needs improvement
+but you're unable to make the change yourself, you should raise a Github issue
+containing a clear description of the problem. Include relevant snippets of
+the content and/or screenshots if applicable. Curriculum owners regularly review
+issue lists and your issue will be prioritized and addressed as appropriate.
+
+## Submitting a Pull Request to Suggest an Improvement
+
+If you see an opportunity for improvement and can make the change yourself go
+ahead and use a typical git workflow to make it happen:
+
+* Fork this curriculum repository
+* Make the change on your fork, with descriptive commits in the standard format
+* Open a Pull Request against this repo
+
+A curriculum owner will review your change and approve or comment on it in due
+course.
+
+# Why Contribute?
+
+Curriculum on Learn is publicly and freely available under Learn's
+[Educational Content License](https://learn.co/content-license). By
+embracing an open-source contribution model, our goal is for the curriculum
+on Learn to become, in time, the best educational content the world has
+ever seen.
+
+We need help from the community of Learners to maintain and improve the
+educational content. Everything from fixing typos, to correcting
+out-dated information, to improving exposition, to adding better examples,
+to fixing tests—all contributions to making the curriculum more effective are
+welcome.

LICENSE.md

@@ -0,0 +1,23 @@
+# Learn.co Educational Content License
+
+Copyright (c) 2018 Flatiron School, Inc
+
+The Flatiron School, Inc. owns this Educational Content. However, the Flatiron
+School supports the development and availability of educational materials in
+the public domain. Therefore, the Flatiron School grants Users of the Flatiron
+Educational Content set forth in this repository certain rights to reuse, build
+upon and share such Educational Content subject to the terms of the Educational
+Content License set forth [here](http://learn.co/content-license)
+(http://learn.co/content-license). You must read carefully the terms and
+conditions contained in the Educational Content License as such terms govern
+access to and use of the Educational Content.
+
+Flatiron School is willing to allow you access to and use of the Educational
+Content only on the condition that you accept all of the terms and conditions
+contained in the Educational Content License set forth
+[here](http://learn.co/content-license) (http://learn.co/content-license).  By
+accessing and/or using the Educational Content, you are agreeing to all of the
+terms and conditions contained in the Educational Content License.  If you do
+not agree to any or all of the terms of the Educational Content License, you
+are prohibited from accessing, reviewing or using in any way the Educational
+Content.

README.md

@@ -17,7 +17,7 @@ The next morning we take out the business card, ready to format it using our pro
 
 ![](https://learn-verified.s3.amazonaws.com/data-science-assets/biz-card-mistakes.jpg)
 
-Yea, Mr. Vandelay may not be the best person to get to know or the best at designing business cards, but like Mr. Vandelay, we know that people misenter information on forms all the time.
+Yeah, Mr. Vandelay may not be the best person to get to know or the best at designing business cards, but like Mr. Vandelay, we know that people enter incorrect information on forms all the time.
 
 So as data scientists, we often need to clean and organize data before we can make sense of it.  Let's get to work. 
 
@@ -75,7 +75,7 @@ Next, write a method that answers a question about our email addresses.  Every e
 "art.vandelay@vandelay.co" # False
 ```
 
-As you can see below, the website "vandelay.com" is not preceded by `"www."`. We can perform what is called string interpolation to fix this! Use the plus sign, `'+'`, to change the website `'vandelay.com'` to the string `'www.vandelay.com'` by prepending `'www.'`.
+As you can see below, the website "vandelay.com" is not preceded by `"www."`. We can perform what is called string concatenation to fix this! Use the plus sign, `'+'`, to change the website `'vandelay.com'` to the string `'www.vandelay.com'` by prepending `'www.'`.
 
 
 ```python
@@ -84,7 +84,7 @@ As you can see below, the website "vandelay.com" is not preceded by `"www."`. We
 
 ### Working with numbers
 
-Finally, Mr. Vandelay gave us his phone number, but he actually has two other phone numbers that are different from the one listed.  All three numbers are basically the same with the excepion of the ending. Below, start by coercing the first phone number, which is currently a string, to an `int` and add one. Next do the same to the second phone number but increase it by two.
+Finally, Mr. Vandelay gave us his phone number, but he actually has two other phone numbers that are different from the one listed.  All three numbers are basically the same with the exception of the ending. Below, start by coercing the first phone number, which is currently a string, to an `int` and add one. Next do the same to the second phone number but increase it by two.
 
 
 ```python
@@ -98,4 +98,4 @@ Finally, Mr. Vandelay gave us his phone number, but he actually has two other ph
 
 ### Summary
 
-Our first lab is done! Sweet. In this lab, we practiced working with string methods to operate on and answer questions about strings. We wrote methods that return Booleans and changed strings to intergers in order to perform addition. So much of working with data is ensuring that it is properly formatted so we can then operate on it, and in this lab, we saw how to use code to do just that.
+Our first lab is done! Sweet. In this lab, we practiced working with string methods to operate on and answer questions about strings. We wrote methods that return Booleans and changed strings to integers in order to perform addition. So much of working with data is ensuring that it is properly formatted so we can then operate on it, and in this lab, we saw how to use code to do just that.

index.ipynb

@@ -57,7 +57,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Yea, Mr. Vandelay may not be the best person to get to know or the best at designing business cards, but like Mr. Vandelay, we know that people misenter information on forms all the time.\n",
+    "Yeah, Mr. Vandelay may not be the best person to get to know or the best at designing business cards, but like Mr. Vandelay, we know that people enter incorrect information on forms all the time.\n",
     "\n",
     "So as data scientists, we often need to clean and organize data before we can make sense of it.  Let's get to work. "
    ]
@@ -211,7 +211,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "As you can see below, the website \"vandelay.com\" is not preceded by `\"www.\"`. We can perform what is called string interpolation to fix this! Use the plus sign, `'+'`, to change the website `'vandelay.com'` to the string `'www.vandelay.com'` by prepending `'www.'`."
+    "As you can see below, the website \"vandelay.com\" is not preceded by `\"www.\"`. We can perform what is called string concatenation to fix this! Use the plus sign, `'+'`, to change the website `'vandelay.com'` to the string `'www.vandelay.com'` by prepending `'www.'`."
    ]
   },
   {
@@ -237,7 +237,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Finally, Mr. Vandelay gave us his phone number, but he actually has two other phone numbers that are different from the one listed.  All three numbers are basically the same with the excepion of the ending. Below, start by coercing the first phone number, which is currently a string, to an `int` and add one. Next do the same to the second phone number but increase it by two."
+    "Finally, Mr. Vandelay gave us his phone number, but he actually has two other phone numbers that are different from the one listed.  All three numbers are basically the same with the exception of the ending. Below, start by coercing the first phone number, which is currently a string, to an `int` and add one. Next do the same to the second phone number but increase it by two."
    ]
   },
   {
@@ -273,27 +273,27 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Our first lab is done! Sweet. In this lab, we practiced working with string methods to operate on and answer questions about strings. We wrote methods that return Booleans and changed strings to intergers in order to perform addition. So much of working with data is ensuring that it is properly formatted so we can then operate on it, and in this lab, we saw how to use code to do just that."
+    "Our first lab is done! Sweet. In this lab, we practiced working with string methods to operate on and answer questions about strings. We wrote methods that return Booleans and changed strings to integers in order to perform addition. So much of working with data is ensuring that it is properly formatted so we can then operate on it, and in this lab, we saw how to use code to do just that."
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.14"
+   "pygments_lexer": "ipython3",
+   "version": "3.6.4"
   }
  },
  "nbformat": 4,