updated readme to wp 4.0

git-svn-id: https://plugins.svn.wordpress.org/scroll-triggered-boxes/trunk@980492 b8457f37-d9ea-0310-8a92-e5e31aec5664
remove 12notions as author

git-svn-id: https://plugins.svn.wordpress.org/scroll-triggered-boxes/trunk@980500 b8457f37-d9ea-0310-8a92-e5e31aec5664
version 1.3.1

git-svn-id: https://plugins.svn.wordpress.org/scroll-triggered-boxes/trunk@980551 b8457f37-d9ea-0310-8a92-e5e31aec5664