adding featured-image-via-url by tsaiid

git-svn-id: http://plugins.svn.wordpress.org/featured-image-via-url/trunk@730489 b8457f37-d9ea-0310-8a92-e5e31aec5664
import

git-svn-id: http://plugins.svn.wordpress.org/featured-image-via-url/trunk@730608 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add something to fit wp plugin's format.

git-svn-id: http://plugins.svn.wordpress.org/featured-image-via-url/trunk@730737 b8457f37-d9ea-0310-8a92-e5e31aec5664
change project home url.

git-svn-id: http://plugins.svn.wordpress.org/featured-image-via-url/trunk@738700 b8457f37-d9ea-0310-8a92-e5e31aec5664
merge from github