Add iCal link too

Author: Edd Wilder-James

MEETINGS.md

@@ -6,5 +6,8 @@ you will find these added to your calendar after you join the Google Group relev
 to the SIG or community group.
 
 There is also a master calendar listing all community meetings:
-[TensorFlow Community Calendar](https://calendar.google.com/calendar/embed?src=tensorflow.org_14t769n89qhsps949c3l0nhd9c%40group.calendar.google.com)
+[TensorFlow Community Calendar](https://calendar.google.com/calendar/embed?src=tensorflow.org_14t769n89qhsps949c3l0nhd9c%40group.calendar.google.com).
+
+Google Calendar users can add the calendar to theirs using the button on the bottom of the master calendar page. If you want
+to add the Community Calendar to your own calendar application, use [this iCal link](https://calendar.google.com/calendar/ical/tensorflow.org_14t769n89qhsps949c3l0nhd9c%40group.calendar.google.com/public/basic.ics).