Foundation update

Tasks:

- [x] Closes #11, setup Travis CI configuration to perform tests
- [x] Updated the dependencies and configuration to be closer to the latest [generator-webapp](https://github.com/yeoman/generator-webapp)
- [x] Fixed #14, test issues: https://travis-ci.org/Glavin001/TasteMusic/jobs/19162734 
- [x] Closes #6, implemented SoundManager (SoundCloud actually does this implicitly too if not already included)
- [x] Closes #5, added support for SoundCloud.

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