Update README
Update and rename README to README.md
Update README.md
Update readme

Corrected openni_launch command.
Merge pull request #12 from Seanny123/patch-1

I will merge your instructions and correct the inaccuracies. Thanks for your valuable contribution!
Update README.md

Removed one unnecessary step from the installation instructions.
specified some documentation items
Merge branch 'groovy_dev' of github.com:ipa320/cob_people_perception into 320-groovy_dev
Update readme
Merge pull request #15 from ipa-rmb/groovy_dev

Some feedback on documentation
Merge pull request #16 from ipa320/groovy_dev

some feedback on documentation for new ROS users