use more readable format for Javascript require statements
fixes #5 - account for application.js and application.js.coffee differences

credit to Nicholas Zaillian
https://github.com/nzaillian/backbone-rails/commit/24fb49d4c941821307ccdec7160ec218e7475706
use new updated Ruby 1.9 hash rocket syntax
credit original author, Nicholas Zaillian
with the change in the code format, make sure that all
contents are delivered into a single string (rather than the
last declared string being injected into the file).

this should fix unit test issues seen on CI
Merge pull request #6 from westonplatter/issues/5

issue #5 account for application.js and application.js.coffee differences