Examples in README

[tlhunter]

It would be great if examples were added to the README.

As an example, if someone were to search for how to loop using Bluebird Promises, they might come across Thrush, and they might also come across the following document:

https://gist.github.com/victorquinn/8030190

If a developer were to have access to both of these resources, they would likely choose the latter.