Entity mapping base + Twitter
LinkedIn work in progress
Merge pull request #3 from jbroudou/linkedin

LinkedIn WIP
Get LinkedIn picture in original size
Added support for Gravatar.
Set $request->expect for expected HTTP code > 300.
HEAD requests return http status code
Replace `@see http://` to `@link http://` in doc blocks
Small fix gravatar
Added Person::getId() common interface method
Implemented for Facebook, Google, LinkedIn & Twitter
Always expect a 404 for Gravatar
Gravatar return null for a 404
Pass $info to Connection::decodeResponse()
Merge branch 'master' of github.com:jasny/social
Pass $info to Connection::httpError()
Remove $request->expect, ignoring 404 responses using httpError() for Gravatar.
Merge branch 'feature-collection'
WIP implementing entities
Added Facebook\Page entity
Implemented Facebook\Entity::refresh() (required abstract method)
Fixed missing abstract methods for Twitter entities
Fixed notices in OAuth2 class
Bugfix
Merge branch 'wip'