Add first version of jigsaw

git-svn-id: https://plugins.svn.wordpress.org/jigsaw/trunk@1014280 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/jigsaw/trunk@1014281 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/jigsaw/trunk@1014282 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated readme

git-svn-id: https://plugins.svn.wordpress.org/jigsaw/trunk@1014285 b8457f37-d9ea-0310-8a92-e5e31aec5664