Add highlightjs editor to view files

app/shell.js

@@ -1,7 +1,26 @@
-define(function (require) {
-  var app = require('durandal/app'),
-      ko = require('knockout');
- 
-  return {
-   };
+define(['durandal/app', 'knockout', 'highlightjs'], function (app, ko) {
+	var type = ko.observable(),
+		content = ko.observable();
+	
+	var sub = app.on('filebrowser:open_file').then(function(message) {
+		type(message.type);
+		if( message.type === "json" ) {
+			content(ko.utils.stringifyJson(message.content));
+		} else {
+        	content(message.content);
+        }
+        hljs.highlightBlock($('#editor')[0]);
+    }, this);
+
+
+	return {
+		attached: function () {
+			hljs.configure({
+			  tabReplace: '  '
+			});
+			hljs.initHighlighting();
+		},
+		type: type,
+		content: content
+	};
 });