GS plugin - removes ckeditor and inserts lepture markdown editor in its place

GSEditorPatch.php

<?php

/**
* GSEditorPatch.php
* @name GS Editor plugin
*
* removes ckeditor and inserts lepture markdown editor in its place
* https://github.com/lepture
* 
* @version 0.1
* @author Shawn Alverson
* @link http://get-simple.info
* @file GSEditorPatch.php
*/

$pluginid = "GSEditorPatch";

function init_GSEditorPatch($pluginid){
	$thisfile = basename(__FILE__, ".php");	// Plugin File
	$name     = $pluginid;
	$version  = "0.2";
	$author   = "getsimple";
	$url      = "http://get-simple.info";
	$desc     = "Overrides ckeditor 3.x with custom";
	$type     = "";
	$func     = "";

	register_plugin($thisfile,$name,$version,$author,$url,$desc,$type,$func);
}

init_GSEditorPatch($pluginid);

if($HTMLEDITOR && get_filename_id() == 'edit'){
	add_action("header",$pluginid.'_header',$pluginid);
	add_action("edit-content",$pluginid.'_edit_content');
}

function GSEditorPatch_edit_content(){
	GLOBAL $HTMLEDITOR;
	$HTMLEDITOR = false;
	ob_start('GSEditorPatch_obfilter');
}

function GSEditorPatch_obfilter($buffer){
	return str_replace('<script type="text/javascript" src="template/js/ckeditor/ckeditor.js"></script>','',$buffer);
}

function GSEditorPatch_header($pluginid){
	global $SITEURL;
 	// echo '<script type="text/javascript" src="'.$SITEURL.'plugins/'.$pluginid.'/js/ckeditor/ckeditor.js"></script>';
	echo '<link rel="stylesheet" href="//cdn.jsdelivr.net/editor/0.1.0/editor.css">';
	echo '<script src="//cdn.jsdelivr.net/editor/0.1.0/editor.js"></script>';
	echo '<script src="//cdn.jsdelivr.net/editor/0.1.0/marked.js"></script>';

	?>
	
	<script type="text/javascript">
	jQuery(document).ready(function () {

		var editor = new Editor({
			element : $('#post-content').get(0)
		});

	});	
  	</script>
  	
  	<?php
}

?>