(HOW TO ADD A GOOGLE SHARED CALENDAR TO AN APPLE IOS DEVICE)
Works as of 12-19-2014
1.) From your iOS device, open "Safari"
2.) Go to https://google.com and click "Sign In"
3.) Sign in with your google account.
4.) Go to https://m.google.com/sync/settings/iconfig/
5.) You will see your shared calendars under the "Shared Calendars" section.
6.) Put a check mark in the shared calendars you want to sync to your iOS device.
7.) You are done.
Happy Trails my fellow Google'rs.