Merge pull request #3 from but-spanel/master

Examples illustrating the work with parameters and launch files
Notes updated
Bare bone version of service client.
Merge.
Merge pull request #4 from ZdenekM/master

Bare bone version of service client.
Grr.
Merge pull request #5 from ZdenekM/master

Grr.
Example renamed
Merge branch 'master' of github.com:robofit/but_ros_workshop
Sample bag file added
Tmp file removed
Code review; Vita's samples and face detector has been added