def friendship_create(id, follow=false)
      body = {}
      body.merge!(:follow => follow) if follow
      perform_post("/friendships/create/#{id}.json", :body => body)
    end
def friendship_create(id, follow=false)
      body = {}
      body.merge!(:follow => follow) if follow
      perform_post("/friendships/create/#{id}.json", :body => body)
    end
friendships/create 关注某用户