Added Text Domain to plugin header.

git-svn-id: https://plugins.svn.wordpress.org/game-schedules/trunk@907581 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated/re-generated with new strings for version 4.1

git-svn-id: https://plugins.svn.wordpress.org/game-schedules/trunk@907582 b8457f37-d9ea-0310-8a92-e5e31aec5664