Use of Coffeescript in collective package

@vangheem It is a community package, not my own package.

@hvelarde Ok, I thought that using something with syntax close to Python would be good to the community (Ruby on Rails community moved in this direction), but I don't care to use Babel instead if you prefer.

@seanupton I'm using Yeoman to help with static files management, and did some integration with buildout, for me it works great.