travis: add `sudo: false` for speed up tests and add nodejs versions `0.12` `4` and `5`
travis: add `sudo: false` for speed up tests and add nodejs versions `0.12` `4` and `5`

Links:
- https://blog.travis-ci.com/2015-11-27-moving-to-a-more-elastic-future

kirstein/angular-autodisable