Move all source files into 'src' folder.

src/functions.js

@@ -0,0 +1,51 @@
+// functions.js
+
+var express = require('express'),
+    Parse = require('parse/node').Parse,
+    PromiseRouter = require('./PromiseRouter'),
+    rest = require('./rest');
+
+var router = new PromiseRouter();
+
+function handleCloudFunction(req) {
+  if (Parse.Cloud.Functions[req.params.functionName]) {
+    if (Parse.Cloud.Validators[req.params.functionName]) {
+      var result = Parse.Cloud.Validators[req.params.functionName](req.body || {});
+      if (!result) {
+        throw new Parse.Error(Parse.Error.SCRIPT_FAILED, 'Validation failed.');
+      }
+    }
+
+    return new Promise(function (resolve, reject) {
+      var response = createResponseObject(resolve, reject);
+      var request = {
+        params: req.body || {},
+        master: req.auth && req.auth.isMaster,
+        user: req.auth && req.auth.user,
+      };
+      Parse.Cloud.Functions[req.params.functionName](request, response);
+    });
+  } else {
+    throw new Parse.Error(Parse.Error.SCRIPT_FAILED, 'Invalid function.');
+  }
+}
+
+function createResponseObject(resolve, reject) {
+  return {
+    success: function(result) {
+      resolve({
+        response: {
+          result: Parse._encode(result)
+        }
+      });
+    },
+    error: function(error) {
+      reject(new Parse.Error(Parse.Error.SCRIPT_FAILED, error));
+    }
+  }
+}
+
+router.route('POST', '/functions/:functionName', handleCloudFunction);
+
+
+module.exports = router;