Update multi_json dependency to version 1.7.0
Update multi_json dependency to version 1.7.0

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