Updated documentation to reflect changes to the handling of the special _super parameter.

Author: OOPMan

README.rst

@@ -192,9 +192,10 @@ functionality.
 When a plugin is instantiated the contents of *members* around bound to the plugin instance using a mechanism that
 provides the function with access to the plugin instance via the **this** keyword.
 
-Additionally, this mechanism also ensures that when the function is called it receives an additional trailing parameter,
-referred to as **_super** in this documentation, that provides access to the function this function overrides. In the
-event that the function overrides nothing, **_super** is safe to call as it results in a no-op.
+Additionally, this mechanism also ensures that if the final parameter of a function is named **_super** then when the
+function is called the value for **_super** will be automatically populated with a reference to the function overriden
+by the called function, if such a overriden function exists. If not, then **_super** will be populated with a no-op and is
+thus safe to call anyway.
 
 Also note that jQuery PluginCreator provides five base functions for new plugins. These functions are: