Updated readme, added some pictures

Author: StBogdan

README.md

@@ -1,4 +1,4 @@
-## Python Solutions to Cracking the Coding Interview (6th edition)
+# Python Solutions to Cracking the Coding Interview (6th edition)
 > Exiting Python solutions can be found [officially here](https://github.com/careercup/CtCI-6th-Edition-Python/tree/e6bc732588601d0a98e5b1bc44d83644b910978d) and [user-created here](https://github.com/w-hat/ctci-solutions)
 
 ### Current progress
@@ -23,16 +23,32 @@
 |  17 	| [Hard](chapter_17)                   	|  26  	|   26  	|         	|
 
 
-### Schedule
-- Week 1: Chapter 4: Graphs and Trees
-- Week 2: Chapter 10: Sorting and Searching
-- Week 3: Chapter 1: Arrays and Strings
-- Week 4: Halted
-
 ### Running the solutions
 
 For convenience, the project has a `setup.py` that specifies a package
 This can be installed locally in the virtualenvironment by using
 ```bash
 pip install -e .
-```
+```
+
+Problems can be run by running the file, most should have a main method.
+```bash
+python p16_20.py
+```
+
+## Some highlights
+
+### Langton's ant (Chapter 16, Problem 22)
+
+![Result pattern](bonus/ant.png)
+
+An interesting example of emergent patterns from simple rules. Raise the number of iterations in the code to see more of the "highway" form.  
+For more information, check the [wikipedia link](https://en.wikipedia.org/wiki/Langton%27s_ant).
+
+### Tree visualising in VS Code
+
+![Example tree](bonus/graphs.png)
+
+This requires graphviz to be installed locally and the extension added to VS Code.   
+The one used in the screenshot can be found [here](https://marketplace.visualstudio.com/items?itemName=tintinweb.graphviz-interactive-preview) 
+