Fix display of image title as a fallback caption.

git-svn-id: https://plugins.svn.wordpress.org/content-slideshow/trunk@901462 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated description and version bump.

git-svn-id: https://plugins.svn.wordpress.org/content-slideshow/trunk@901463 b8457f37-d9ea-0310-8a92-e5e31aec5664