Update rpsec-controllers

rspec-controllers.md

@@ -4,6 +4,19 @@ layout: default
 ---
 
 ```rb
+describe MyController do
+  describe "POST update" do
+    it "works" do
+      post :update, { user: { name: "john" } }
+
+      controller
+      controller.send ...
+
+      response
       expect(response).to be_success
       expect(response).to have_http_status(200)
       expect(response).to render_template("index")
+    end
+  end
+end
+```