Update haml dependency to version 3.1.2
Update haml dependency to version 3.1.2

sferik/sign-in-with-twitter,arrogantgamer/ludum_dare_28,ksmetana/rails-app-twitter-test,sferik/sign-in-with-twitter,sferik/sign-in-with-twitter,ksmetana/rails-app-twitter-test,theonlyjames/garbage,theonlyjames/garbage,arrogantgamer/ludum_dare_28