API docs example

i documented `lib/behaviour.js` to give  you an idea.. you can see the generated page here: https://github.com/75lb/angular-debaser/blob/master/docs/behavior.md

i installed the [grunt plugin](https://github.com/75lb/grunt-jsdoc-to-markdown).. build the docs with `$ grunt jsdoc2md`..

any questions, let me know