I had a similar brick wall moment after having written a tool to sync Google Calendar events with the `when` calendar tool (http://www.lightandmatter.com/when/when.html).

Which is why I never published it (although I have been using it for almost two years), and setting it up requires a series of laborious steps of activating the Google Developer Console, creating API keys etc., which I found just to embarrassing to put in a README :)