Readme and Pony improvements

Based on @evantahler's comments in https://github.com/taskrabbit/forklift/pull/18#issuecomment-39002166:
- I've reverted the .gitignore change to the generator
- Reverted changes to example/ except email.yml

This should be good to merge.

FYI there is still broken code in the `Suggested Patterns` part of the readme as I described here https://github.com/taskrabbit/forklift/pull/18#issuecomment-38982979