[bugfix] trim non-alphanum chars from urls

src/httpServer.js

@@ -50,6 +50,7 @@ HttpServer.prototype.isRequestPublic = function(url) {
 };
 
 HttpServer.prototype.servePublic = function(url, res) {
+	url.replace(/\W/g, '');
 	var pathTokens = url.split('/')
 		,localPath = './public';