I'm writing a CKEditor plugin specific to my Web app. Until now, I've successfully kept my own files outside of the CKEditor code structure, but the only documentation I can find about the plugin creation process (being a [user-made tutorial](http://www.voofie.com/content/2/ckeditor-plugin-development/), no less) says to just shoehorn my plugin code into `ckeditor/_source/plugins`.

Is this really the only way to go? Am I stuck with commingling my code with CKEditor release code, or is there a way to tell it where to load plugins from? A PLUGINPATH setting, if you will?