The obligatory todos example. This one uses rake-pipeline.
The Assetfile is pretty heavily commented, so if you'd like to know more about how to use rake-pipeline in real life, you should check it out.
First, run bundle to install our dependencies. Then, bundle exec rakep build will assemble
the app according to the Assetfile. This will output a public/ directory containing a static
web application. Rake-pipeline also includes a preview server, so while you're developing you
can run bundle exec rakep server and rake-pipeline will serve your app on port 9292.
By Yehuda Katz and Tom Dale