Fixing twitter API 1.0 deprecated issue and header warnings #28243

git-svn-id: https://plugins.svn.wordpress.org/addthis-social-sign-in/trunk@780332 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating version

git-svn-id: https://plugins.svn.wordpress.org/addthis-social-sign-in/trunk@780336 b8457f37-d9ea-0310-8a92-e5e31aec5664