gave tweeter its own function

host.json

@@ -0,0 +1,8 @@
+{
+  "version": "2.0",
+  "extensionBundle": {
+    "id": "Microsoft.Azure.Functions.ExtensionBundle",
+    "version": "[1.*, 2.0.0)"
+  },
+  "extensions": { "http": { "routePrefix": "" } }
+}