def up_vote!(votable)
      begin
        up_vote(votable)
        success = true
      rescue Exceptions::AlreadyVotedError
        success = false
      end
      success
    end
def up_vote!(votable)
      begin
        up_vote(votable)
        success = true
      rescue Exceptions::AlreadyVotedError
        success = false
      end
      success
    end
Up vote any "votable" object without raising an error. Vote is ignored.