Update project to latest package versions, Ember 2.x compat
Update project to latest package versions, Ember 2.x compat

Add documentation to README so that developers can better view the APIs
Integrates ember-cli-github-pages so that a demo app can easily be deployed to gh-pages

plyfe/ember-social,plyfe/ember-social,chrislopresto/ember-social,jpadilla/ember-social,chrislopresto/ember-social,jpadilla/ember-social,danmcclain/ember-social,danmcclain/ember-social