Updated to version 1.2.0, see changelog for details

git-svn-id: https://plugins.svn.wordpress.org/simple-instagram-embed/trunk@779699 b8457f37-d9ea-0310-8a92-e5e31aec5664
force update of readme files

git-svn-id: https://plugins.svn.wordpress.org/simple-instagram-embed/trunk@779700 b8457f37-d9ea-0310-8a92-e5e31aec5664