merging desktop and mobile screenshot

git-svn-id: https://plugins.svn.wordpress.org/tweet-prompt-box/trunk@1012247 b8457f37-d9ea-0310-8a92-e5e31aec5664
increase tested version

git-svn-id: https://plugins.svn.wordpress.org/tweet-prompt-box/trunk@1012248 b8457f37-d9ea-0310-8a92-e5e31aec5664