remove python and es2015 tutorial as of breaking change

Author: ShMcK

_posts/landing/2016-01-01-summary.md

@@ -4,11 +4,8 @@ languages:
   - Javascript:
     name: JS
     icon: javascript-plain.svg
-  - Python:
-    name: Python
-    icon: python-original.svg
 categories:
 - summary
 ---
 
-CodeRoad is a coding education platform aimed at creating interactive coding lessons. CodeRoad makes it easy to create, share, edit, and publish video-game-like tutorials that run alongside your code in the editor. It currently works with Javascript & Python, with more languages to come.
+CodeRoad is a coding education platform aimed at creating interactive coding lessons. CodeRoad makes it easy to create, share, edit, and publish video-game-like tutorials that run alongside your code in the editor. It currently works with Javascript, with more languages to come.

_posts/tutorial-docs/2016-01-06-test-examples.md

@@ -61,7 +61,8 @@ it('should be {a: 42}', () => {
 ```js
 it('should include the variable "count"', () => {
     const regex = new RegExp('count');
-    const string = target.toString();
+    // __text__ is an added property that provides the text version of the file
+    const string = target.__text__;
     expect(string).to.match(regex);
 });
 ```
@@ -70,7 +71,7 @@ it('should include the variable "count"', () => {
 it('should access the property "prop"', () => {
     const regex1 = /\.prop/;            // dot notation
     const regex2 = /\[["']prop["']\]/;  // bracket notation
-    const string = target.toString();
+    const string = target.__text__;
     const result = !!string.match(regex1) || !!string.match(regex2);
     expect(result).to.be.true;
 });