Correct error message output
Catch errors when reading ZigbeeDirect sensor data
Remove unused config option and update for accompany db
Update error message to go to cerr, Check after each python call for errors, change makefile to relative path
Return after parse error from zigbee sensors
Python threading fixes, add dummy robot class for use in testing
Merge pull request #20 from uh-nmb/master

Changes from Herleen, threading fixes