improved README
improved README

simplabs/rails_api_auth,fidalgo/rails_api_auth,ibroadfo/rails_api_auth,fidalgo/rails_api_auth,jimbeaudoin/rails_api_auth,fidalgo/rails_api_auth,simplabs/rails_api_auth,simplabs/rails_api_auth,jimbeaudoin/rails_api_auth,ibroadfo/rails_api_auth,ibroadfo/rails_api_auth,jimbeaudoin/rails_api_auth