added debug output if login to camera was not successful
add support for dynamic_reconfigure
avoid a bug due to rospy.get_param(None, default) returning full parameter tree rather than the default (see https://github.com/ros/ros_comm/issues/253 )
Merge pull request #22 from kalectro/master

Really sorry for the delay, guys. I don't like merging without doing my own testing, but it's not worth delaying others this long.