Added US mo file

git-svn-id: https://plugins.svn.wordpress.org/stageshow/trunk@768475 b8457f37-d9ea-0310-8a92-e5e31aec5664
Deleted US .po 

git-svn-id: https://plugins.svn.wordpress.org/stageshow/trunk@768477 b8457f37-d9ea-0310-8a92-e5e31aec5664