working pagedown!!!!

app/assets/javascripts/pagedown.js

@@ -0,0 +1,11 @@
+(function() {
+    var ACE_FILES_PATH = '/assets/ace/';
+
+    window.PagedownEditor = function(selector) {
+        var converter = Markdown.getSanitizingConverter();
+        var editor    = new Markdown.Editor( converter );
+
+        editor.run();
+
+    };
+})();