Some small & helpful updates for bug fixes & user clarity

Hi Will, I really like your generator but I had some issues getting it working, especially with Backbone.  I've made some bug fixes as well as small changes that you're free to include in your source if you agree they are helpful for others who may not be as well versed in these complex AMD testing environments.

- Updated Mocha bower & npm version to ~1.12.0 to fix breaking changes
- Added example starter template with Backbone dependency (exports a Backbone model)
- Added a simple unit test to verify the Backbone model was created and exported correctly
- Changed **/*.js watch wildcard to just js/ and test/ because it was producing a "too many files error"
- Updated the README to reinforce having a server running before trying to run tests