Added note to FAQ about AdBlock and the Slot form element.

git-svn-id: https://plugins.svn.wordpress.org/wp125/trunk@821898 b8457f37-d9ea-0310-8a92-e5e31aec5664
Changed Tested Up To field to 3.8

git-svn-id: https://plugins.svn.wordpress.org/wp125/trunk@821899 b8457f37-d9ea-0310-8a92-e5e31aec5664
Upping version number to 1.5.2

git-svn-id: https://plugins.svn.wordpress.org/wp125/trunk@821906 b8457f37-d9ea-0310-8a92-e5e31aec5664