add image folder

git-svn-id: https://plugins.svn.wordpress.org/contact-form-integrated-with-google-maps/trunk@809218 b8457f37-d9ea-0310-8a92-e5e31aec5664
edit readme file

git-svn-id: https://plugins.svn.wordpress.org/contact-form-integrated-with-google-maps/trunk@809219 b8457f37-d9ea-0310-8a92-e5e31aec5664