added baconjs auth module to test interacting with GitHub API for autocomplete of users

type a github users name into the input box and it should display a
list of matching names with their login
added non-persistent OAuth example using passport with GitHub login
added potentially interesting oauth js libraries

oauth.js belongs to oauth-js @oauth.io, a startup trying to act as a
single unified OAuth provider.
added Mongoose and now saving/looking up user from database