Yes, I'm not too familiar with google calendar so I don't know if it will continously update the calendar, but this is how you add the TVRage ical feed to google calendar:
In Google calendar you have the menu "Other Calendars", press the arrow following that and in the box that pops up choose "Add By URL"
Paste your personal ical feed in the box, press Add Calendar and you are done.
To find your TVRage personal ical feed URL go here
Hope that helps.