addcfcode Plugin Updated

I've made changes and fixes to the addcfcode plugin created by Pritesh Patel. In addition, the plugin source has been added to the MangoBlog extensions repository, as well as the latest download zip. This version adds the option to save the generated code in memory instead of the file system and gives to the possibility to change the "shortcode" used to enclose the code (default is [addcfcode]).