Running Rake as a script

Rake seemed nice, but I needed some of it for a server side trick. Not difficult, but if you're new to it, it's tough to find just what you need.

https://gist.github.com/1228206/eca65818062f0a18a5c7923c94350f56153b32a6

Is all the boilerplate you need to run rake tasks as a script, from anywhere in the filesystem.