refactor WP_MarkupCollection_Command

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889516 b8457f37-d9ea-0310-8a92-e5e31aec5664
Rename to WP_MarkupCollection_Command_PHPRunner

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889517 b8457f37-d9ea-0310-8a92-e5e31aec5664
Modify readme.txt

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889518 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix for php 5.2.6

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889519 b8457f37-d9ea-0310-8a92-e5e31aec5664
support command runnder via post

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889520 b8457f37-d9ea-0310-8a92-e5e31aec5664
Bump to v1.1.0

git-svn-id: https://plugins.svn.wordpress.org/wp-markupcollection/trunk@889521 b8457f37-d9ea-0310-8a92-e5e31aec5664