Python-xbee library location changed due to GoogleCode closing

[tatyanavolkova]

The python-xbee projecr is now located here:
https://code.google.com/archive/p/xoseperez-python-xbee/

[fatchat]

https://storage.googleapis.com/google-code-archive-source/v2/code.google.com/xoseperez-python-xbee/source-archive.zip