Master Source: Find all information here http://adityatannu.com/blog/post/2016/01/31/ESP8266-Witty-Cloud-Board-Demo.html
Simplified: The data folder is downloadable as zip-container for easier handling.
I use the above sketch for hardware testing of the two onboard devices, LDR and RGB.
My learnings during setting up the Witty Board:
A very first step is to get the upload tool up and running
https://github.com/esp8266/arduino-esp8266fs-plugin
Get "ESP8266 Sketch Data Upload" tool into Tools tab of your Arduino IDE.
Once the board is flashed, read from Serial Monitor its IP-adress, assigned by your local DHCP server. This IP-adress you enter into the menuinterface.js file (inside data folder). Upload it to the Witty Board. You might want to do it with this: http://local.ip-adress/edit
Done.
The data folder (unzipped) is stored in parallel to the WittyCloudTest.ino sketch.