Update README.md

Author: katrinsharp

README.md

@@ -1,7 +1,37 @@
+## Setup instructions:
+
+* Install JDK: https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html (JDK 8).
+* Install sbt: 
+Mac: http://www.scala-sbt.org/release/docs/Installing-sbt-on-Mac.html (you can use `brew`, it will install the latest).
+Win: http://www.scala-sbt.org/0.13/docs/Installing-sbt-on-Windows.html
+* Install Intellij: 
+Mac: https://www.jetbrains.com/idea/download/#section=mac
+Win: https://www.jetbrains.com/idea/download/#section=windows
+* Install Scala plugin for IJ: Intellij -> Preferences -> Plugins -> Search for official Scala plugin.
+* Clone this repo: `git clone https://github.com/katrinsharp/spark-sample-project.git`
+
+## Verify
+
+* Open up a CLI (command line) and `cd` to root folder of this repo. Type:
+
+```
+> sbt
+```
+You should see `>` after it's updating some its dependencies (Use `exit` for quitting). Now type:
+
+```
+> console
+```
+
+You should see `scala>` after some more updates (Use `:q` for quitting). You're ready to go with Scala CLI.
+
+* Open the cloned project in IJ: File -> New -> Project from existing sources. You're ready to go with IJ.
+
+
 # Different ways to execute the code
 
 `sbt test` - executes all tests
 
 `sbt run` - executing Main with Spark in-memory
 
-`sbt assembly` - creates a self-contained jar: `spark-sample-project/target/scala-2.11/spark-sample-project-assembly-0.1.jar` that can be submitted to Spark cluster
+`sbt assembly` - creates a self-contained jar: `spark-sample-project/target/scala-2.11/spark-sample-project-assembly-0.1.jar` that can be submitted to Spark cluster