create specific firmware online

quickly checked and the result is:

• master/modules s a subset of master/devices
  
• master/devices is a subset of espruino.com/modules ( for example AT.js, ATSMS.js. BMPLoader.js, etc., etc.)
  
• espruino.com/modules has *.min.js for each module, github repos don't
  
  

For now I would start with master/devices and create a *.min.js on the fly
If no doc is available, we could show source instead.

Update:Sorry, misunderstanding from my side
Looks like I've to combine both github directorys to get most correct list