Added readme.txt file.

git-svn-id: https://plugins.svn.wordpress.org/disqus-recent-comments-widget-by-tricks-panda/trunk@833249 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added screenshot 1.

git-svn-id: https://plugins.svn.wordpress.org/disqus-recent-comments-widget-by-tricks-panda/trunk@833250 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added screenshot2.

git-svn-id: https://plugins.svn.wordpress.org/disqus-recent-comments-widget-by-tricks-panda/trunk@833251 b8457f37-d9ea-0310-8a92-e5e31aec5664