document req timeout

node_modules/c9/request_timeout.js

@@ -1,3 +1,8 @@
+/**
+ * the default response timeout in node.js is 2min. If a request takes longer
+ * to process then it needs to be increased
+ */
+
 module.exports = function(timeout) {
     return function(req, res, next) {
         req.setTimeout(timeout);