Build helper (Windows)

Using these two files it gets incredibly easy to build the JavaScript-files from the CoffeeScript-files and the CSS-files from the SASS-files.

Just
1. `cd bin`
2. `build.bat`

Prerequisites:
- Ruby
- `gem install sass` see http://sass-lang.com/tutorial.html
- Node.js
- `sudo npm install -g coffee-script` see http://coffeescript.org/#installation