Add missing files and optimise wp- files

Wordpress.gitignore

@@ -1,26 +1,5 @@
 .htaccess
-wp-activate.php
-wp-app.php
-wp-atom.php
-wp-blog-header.php
-wp-comments-post.php
-wp-commentsrss2.php
-wp-config-sample.php
-wp-config.php
-wp-cron.php
-wp-feed.php
-wp-links-opml.php
-wp-load.php
-wp-login.php
-wp-mail.php
-wp-pass.php
-wp-rdf.php
-wp-register.php
-wp-rss.php
-wp-rss2.php
-wp-settings.php
-wp-signup.php
-wp-trackback.php
+wp-*.php
 xmlrpc.php
 wp-admin/
 wp-includes/
@@ -32,4 +11,6 @@ wp-content/wp-cache-config.php
 wp-content/cache/*
 wp-content/cache/supercache/*
 sitemap.xml
-sitemap.xml.gz
+sitemap.xml.gz
+readme.html
+license.txt