- WIP: Fixing up unit tests for Linked In provider.
updated scope

as per here http://developer.github.com/v3/oauth/#scopes the scope was being set
incorrectly. This seemed to cause GitHub to constantly ask for the users
permission to authorise the log in attempt
Merge pull request #54 from martin308/github-scope-fix

- Updated GitHub scope for the request to stop always asking permission to log in.