Reorganize README Table of Contents

README.md

@@ -14,16 +14,20 @@ You might also want to check out my categorized list of Redux-related addons, li
 - [Boilerplates and Starter Kits](boilerplates-and-starter-kits.md)
 
 #### Basic Tutorials
+- [ES6 Features and Samples](es6-features.md)
 - [React Tutorials](react-tutorials.md)
 - [Flux Tutorials](flux-tutorials.md)
 - [Redux Tutorials](redux-tutorials.md)
 
-#### Advanced Concepts
-- [ES6 Features and Samples](es6-features.md)
+#### Intermediate Concepts 
+
 - [Using React with ES6](using-react-with-es6.md)
 - [Functional Programming](functional-programming.md)
 - [Immutable Data](immutable-data.md)
 - [React/Redux Testing](react-redux-testing.md)
+
+#### Advanced Topics
+
 - [React Performance](react-performance.md)
 - [Webpack Advanced Techniques](webpack-advanced-techniques.md)