add shoulda-matcher gem
wip edit skills
wip
add oauth2 gem
wip
add oauth gem
add github_id to users
Merge branch 'oauth' into ajax

* oauth:
  add oauth2 gem
  wip
  wip edit skills
  add shoulda-matcher gem

Conflicts:
	Gemfile
	app/assets/javascripts/models/project.js
	config/routes.rb
	db/schema.rb
	spec/controllers/users_controller_spec.rb