Add a logger (to stdout for the moment)

TODO.md

@@ -1 +1,7 @@
 * Enable Logging.
+* Define the recipes model (UML).
+* Implement the model as relational with SQLite.
+    * Create and update functions.
+* Define the UI (mockups).
+    * Use Bulma to implement the UI in HTML5+CSS3.
+* Define the logic behind each page and action.