publish photos with facebook
Merge pull request #19 from kylewm/master

twitter: pass user_id to user_timeline api call
refactor urlencode calls
Merge pull request #20 from notenoughneon/facebook-media

publish photos with facebook
add Facebook.create_notification()

Uses the Notifications API (beta):
https://developers.facebook.com/docs/games/notifications/#impl
use explicit user id when creating facebook notification

...since it uses a "synthetic" app access token based on the app id and secret, not a user-specific token.
https://developers.facebook.com/docs/facebook-login/access-tokens/#apptokens