0.1.13 : Regexp for revision finder 

Not sure if this 0.1.13 version is still under support. I'm using it after having setup an app with the official Backbone generator through : `yo backbone --appPath=app --coffee --requirejs --test-framework=jasmine --template-framework=lodash`
as requested in guidelines, here is the env output : [gist](https://gist.github.com/challet/1ed0c929c15f66b802d8#file-gistfile1-txt)

**bug description**
For cases where there are files like :
```
module.css            => v1aefcd.module.css
variation.module.css  => v2bcdfae.variation.module.css
```
The previous regexp in the revision finder lib could be confused and see `v2bcdfae.variation.module.css` as being a revision of `module.css`.