Facebook, github and google authentication
Update composer.json
Small refactor
Adds LinkedIn provider
Use the guzzle api to parse to content as XML or JSON
LinkedIn avatar url added
Update composer.json
Microsoft Live provider added
Merge branch 'develop' of https://lcobucci@github.com/lcobucci/social.git into develop
Basic library implemented
Merge branch 'release-1.0.0-alpha1'