Add first controller

app/controllers/api.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import logging
+from app import app
+
+logger = logging.getLogger(__name__)
+
+
+@app.route("/comments", methods=['GET'])
+def get_comments():
+    return "OK"