Importing immocaster.php

git-svn-id: https://plugins.svn.wordpress.org/immocaster/trunk@882370 b8457f37-d9ea-0310-8a92-e5e31aec5664
Importing readme.txt

git-svn-id: https://plugins.svn.wordpress.org/immocaster/trunk@882371 b8457f37-d9ea-0310-8a92-e5e31aec5664