Why rfduino is not supported for arduino...They removed the link from their website..can i manually add board definition for rfduino from github to arduino..if so how?..
You can add it manually, but it's a bit complicated. Much easier is to use my modified JSON file to install it via Boards Manager. Instructions are here:
https://forum.arduino.cc/index.php?topic=610331.msg4138664#msg4138664
Please let me know if you have any questions or problems.