JS Preprocessor (In Progress)

As a preview, there is my branch on the JS Preprocessors.

- CoffeeScript
  - [x] CoffeeScript version of the app
  - [x] CoffeeScript build
  - [x] CoffeeLint
  - [x] Tests
- ES6
  - [x] ES6 version of the app
  - [x] Traceur build
  - [x] 6to5 build
  - [x] Module handling with Browserify
  - [x] Tests
- TypeScript
  - [ ] TypeScript version of the app
  - [ ] TypeScript build
  - [ ] Some sort of TS linter?
  - [ ] Tests
Yeah, completely :) I knew that it was not so much es6-y but I didn't really practice with it. I try to make something working and I think that the es6 and the ts versions will need some upgrades...