Update multi_json dependency to version 1.7.2
Update multi_json dependency to version 1.7.2

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