WP LaTeX: Update readme.


git-svn-id: https://plugins.svn.wordpress.org/wp-latex/trunk@982262 b8457f37-d9ea-0310-8a92-e5e31aec5664
WP LaTeX: Fix PHP Strict error.


git-svn-id: https://plugins.svn.wordpress.org/wp-latex/trunk@982265 b8457f37-d9ea-0310-8a92-e5e31aec5664