Added omniauth-sso-cookie integration
Added middleware which kills the session if the auth cookie is not present - logging the user out of Discourse if s/he logged out of the main site
Merge branch 'development' into ominauth-sso-cookie-integration
Merge pull request #2 from cdman/development

Merge latest changes from upstream.
Merge pull request #1 from cdman/ominauth-sso-cookie-integration

Ominauth sso cookie integration