Release preparations
[scitos_ptu] Prerelease cleanup

Removed unused toy node.
[scitos_touch] Prerelease cleanup
Added license to package.xml
Added license file
Merge pull request #101 from cdondrup/cmd_vel_mux

[scitos_cmd_vel_mux] Prerelease cleanup
Merge pull request #100 from cdondrup/touch

[scitos_touch] Prerelease cleanup
Merge pull request #99 from cdondrup/scitos_ptu

[scitos_ptu] Prerelease cleanup