Addition of wifi.on(connected) implementation
Addition of wifi.on(connected) implementation

wilberforce/Espruino,nkolban/Espruino,lancernet/Espruino,luetgendorf/Espruino,lancernet/Espruino,luetgendorf/Espruino,nkolban/Espruino,luetgendorf/Espruino,wilberforce/Espruino,luetgendorf/Espruino,lancernet/Espruino,luetgendorf/Espruino,lancernet/Espruino,wilberforce/Espruino,lancernet/Espruino,wilberforce/Espruino,nkolban/Espruino,nkolban/Espruino,wilberforce/Espruino,nkolban/Espruino,nkolban/Espruino,lancernet/Espruino,luetgendorf/Espruino,wilberforce/Espruino,nkolban/Espruino,wilberforce/Espruino,luetgendorf/Espruino,lancernet/Espruino