Merge pull request #23 from barnesjd/master

Added Dropbox support and updated README
remove non scala 2.10 builds.
Merge pull request #24 from jonoabroad/master

remove non scala 2.10 builds.
Merge branch 'master' of github.com:barnesjd/lift-omniauth

Conflicts:
	build.sbt
Merge pull request #26 from barnesjd/master

Ready for 0.8 release
Lift 3.0 + Omniauth 0.8

Updating omniauth 0.8 so it can be used with Lift 3.0 also.
Google sign up

Adding google provider to allow sign up/in using google+
Google sign up

Removing the case class to parse the Json response.
Linkedin sign up

Adding linkedin provider to allow sign up/in using linkedin.
Merge pull request #28 from ggarciajr/master

Linkedin and Google Providers
Updating README
Adding support for refresh token.
Supply state parameter, used to protect against cross-site request forgery attacks.

Added the scope parameter so we can later make requests against github for other user details.
the property for the scope is omniauth.github.scope.
Adding function to validate state and thus reducing some code duplication.
Removing unused imports.
Fields to retrieve are now configurable.
Receiving a JSON instead of an XML.
Merge pull request #29 from jonoabroad/master

Added state and scope url parameters
Merge branch 'master' of https://github.com/ghostm/lift-omniauth
Use the function to test state token.
Cleaning up the code.