Added some more information to README

Author: JorgenEvens

README.md

@@ -2,3 +2,17 @@ php-cache-dashboard
 ===================
 
 A dashboard for PHP Opcache and APCu
+
+# Supported operations
+
+ - View memory statistics
+ - View hit rate
+ - Select keys based on regular expression
+ - Delete keys based on regular expression
+ - Selecting all keys
+ - Deleting keys without regular expressions
+
+# Usage
+
+Simply drop the cache.php file somewhere on your webserver, preferably somewhere private, and that is it.
+Navigate to the page using your browser and you will receive cache information.