Adding first version of plugin

git-svn-id: http://plugins.svn.wordpress.org/jellyfish-invaders/trunk@648542 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed plugin page URI

git-svn-id: http://plugins.svn.wordpress.org/jellyfish-invaders/trunk@648631 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update for WordPress 3.8 compatibility

git-svn-id: http://plugins.svn.wordpress.org/jellyfish-invaders/trunk@822235 b8457f37-d9ea-0310-8a92-e5e31aec5664