Comment 8 for bug 1356869

Actually the online-accounts solution worked for me after installing / replacing a few packages:

sudo apt-get remove evolution-data-server-online-accounts
sudo apt-get install switchboard-plug-online-accounts evolution-data-server-pantheon-online-accounts evolution-data-server-google2 evolution-data-server-outlook

Restarted switchboard, went to online account settings and added a google account (googl+ icon).

Rebooted to make sure all evolution data server things got started correctly (overly careful. but elementaryos on an ssd boots just so fast...).

All my google calendars did show up in maya.