Fix regex for picture caption

git-svn-id: https://plugins.svn.wordpress.org/visual-verse-of-the-day-widget/trunk@1055906 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update readme for version 1.2

git-svn-id: https://plugins.svn.wordpress.org/visual-verse-of-the-day-widget/trunk@1055907 b8457f37-d9ea-0310-8a92-e5e31aec5664