Some interesting tasks in `deploy.rb`:

In the `deploy` namespace:

$ cap deploy:upload FILES=templates,controller.rb

    Copy files to the currently deployed version. This is useful for updating 

    files piecemeal, such as when you need to quickly deploy only a single 

    file. Some files, such as updated templates, images, or stylesheets, 

    might not require a full deploy, and especially in emergency situations 

    it can be handy to just push the updates to production, quickly.

$ cap deploy:restart

    A blank task exists as a hook into which to install your own environment 

    specific behaviour.