Add rake tasks for spec
Add rake tasks for spec

sbadura/has_friendship,tkubicek3/my_has_friendships,sungwoncho/has_friendship,yhoshino11/has_friendship,yhoshino11/has_friendship,tkubicek3/my_has_friendships,sbadura/has_friendship,sungwoncho/has_friendship,tkubicek3/my_has_friendships,yhoshino11/has_friendship,sbadura/has_friendship