Added MDE (issue #4)

vendor/michelf/php-markdown/Michelf/MarkdownInterface.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Markdown  -  A text-to-HTML conversion tool for web writers
+ *
+ * @package   php-markdown
+ * @author    Michel Fortin <michel.fortin@michelf.com>
+ * @copyright 2004-2016 Michel Fortin <https://michelf.com/projects/php-markdown/>
+ * @copyright (Original Markdown) 2004-2006 John Gruber <https://daringfireball.net/projects/markdown/>
+ */
+
+namespace Michelf;
+
+/**
+ * Markdown Parser Interface 
+ */
+interface MarkdownInterface {
+	/**
+	 * Initialize the parser and return the result of its transform method.
+	 * This will work fine for derived classes too.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public static function defaultTransform($text);
+
+	/**
+	 * Main function. Performs some preprocessing on the input text
+	 * and pass it through the document gamut.
+	 *
+	 * @api
+	 *
+	 * @param  string $text
+	 * @return string
+	 */
+	public function transform($text);
+}