Migration to MichelFortin's implementation.

Since flydev has marked his version as deprecated (it was a simple composer port of Michel Fortin's initial project), it seems good to revert the dependency to the stable/continued project.

MarkdownParserInterface.php

@@ -11,5 +11,5 @@ interface MarkdownParserInterface
      *
      * @return string rendered html
      */
-    function transformMarkdown($text);
+    function transform($text);
 }