fixed parameter acces for private namespace.
head state published
Merge pull request #5 from cburbridge/master

parameterised config file working with launch files; head state published.
Modified the launch file to start the Asus Xtion and updated the readme
Merge pull request #6 from RaresAmbrus/master

Updated the launch file to start the Asus Xtion
reset motor stop, reset odom, emergency stop and motor switch services
Merge pull request #7 from cburbridge/master

New services to emergency stop and motor enable
Merge remote-tracking branch 'upstream/master'