Merge pull request #9 from dmill/heroku_udpates

Heroku udpates
adds passing tests for authorization model find_or_create method
Merge branch 'master' of https://github.com/dmill/gitfolio into sessions_testing
adds passing sessions controller spec for create action
removes unnecessary failing developers feature spec
adds sessions controller test for destroy action
makes login and logout buttons work on homepage and render conditionally
Merge pull request #10 from dmill/sessions_testing

Sessions testing
change app id and secret for production
remove app id and secret from initializers file
changes app id and secret to environment variables
removes app id and secret comment from omniauth file
adds dotenv-rails gem and a .env file storing development environment variables
adds .env files to .gitignore
removes .env
Merge pull request #12 from dmill/omniauth_heroku

Omniauth heroku
Merge branch 'master' into themes_spike