Added MDE (issue #4)

Core/View.php

@@ -1,5 +1,6 @@
 <?php
 namespace Core;
+use \Michelf\Markdown;
 
 class View
 {
@@ -9,9 +10,15 @@ class View
     {
         if (self::$twig === null) {
             $loader = new \Twig_Loader_Filesystem('../App/Views');
-            $twig = new \Twig_Environment($loader);
+            self::$twig = new \Twig_Environment($loader);
+
+            $filtermd = new \Twig_Filter('rendermd', function($string) {
+                return Markdown::defaultTransform($string);
+            }, ['is_safe' => ['html']]);
+
+            self::$twig->addFilter($filtermd);
         }
 
-        echo $twig->render($template, $args);
+        echo self::$twig->render($template, $args);
     }
 }