DFRduino nano board file

Hi,
Can you advise where I can get the board file to add my DFRduino nano to the Adruino 1.6.5 IDE?
I would like to program my board.
Thank you.
Can you advise where I can get the board file to add my DFRduino nano to the Adruino 1.6.5 IDE?
I would like to program my board.
Thank you.