Fixes and tweaks, plus: follow/unfollow users, get current user info …

…and create gists

Updated API docs.

Removed tests.

Smart caching of latest commit sha to overcome fast-forward update is…

…sue.

Merge branch 'master' of github.com:poole/github

Conflicts:
	github.js

Add support for OAuth.

Fixed README.

Update README.md

Updated .gitignore.

Grammar.