models for user and page
merge game model
Merge branch 'master' of github.com:jcgertig/iso into feature/user_auth
basic setup for omniauth
Merge pull request #3 from jcgertig/feature/user_auth

Feature/user auth
added challenge model, migration, and relations
Merge branch 'feature/create_challenge_model' of https://github.com/jcgertig/iso into feature/create_challenge_model