LED1/2 and BTN on RuuviTag inverted

Thanks for porting Espruino to the RuuviTag! I was looking forward to doing it myself but this works for me to :-).

However, it looks like the LEDs and BTN are low-active:

• LED1.write(false); // => LED is on
  
• LED1.write(true); // => LED is off
  
• digitalRead(BTN); =0 //if B is pressed
  
  

Not a big issue, can it be fixed?