add omniauth-github and dotenv-rails
add user model
add users controller
add omniauth initializer
add #current_user
add sessions controller
update routes
update sign out link
add .env to .gitignore
Merge branch 'master' into setup-omniauth-github

Conflicts:
	.gitignore
	Gemfile
	Gemfile.lock
	db/schema.rb
only ask for email right now
Merge pull request #6 from tielur/setup-omniauth-github

Setup omniauth github