Arduino XBee breakout board holder

A holder to allow an XBee on a Ciseco XBBO breakout board to be mounted on a standard Arduino prototyping shield.

I needed a convenient way to mount an XBee on a shield in a current project, using the SoftwareSerial library with pins D6 and D7 in order to keep Tx and Rx free. Although some of the commercial XBee shields can be configured this way they almost all use the ISP header, which wasn't possible with my current project. Hence this holder to allow the breakout to be fitted to a plain p