Update README file.
Merge branch 'master' of github.com:kalixia/xbee-tools

* 'master' of github.com:kalixia/xbee-tools:
  Trying to do the initial work on the API.
First simple solution sending random data to COSM vis WS API.
Gateway reading XBee Series 1 data as doubles and sending them to COSM.
Something working fine with my last patches on Netty.
Added missing AT commands.
Merge branch 'modeminfo' of github.com:kalixia/xbee-tools into modeminfo

* 'modeminfo' of github.com:kalixia/xbee-tools:
  Something working fine with my last patches on Netty.