Update webmock dependency to version 1.6.4
Update webmock dependency to version 1.6.4

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