Merge pull request #40 from iory/master

qrcode detector
Adjust launch & world files for the new kiva_pod (added items in all bins which will be used in the challenge contest
Merge pull request #43 from wkentaro/new-kiva

Adjust launch & world files for the new kiva_pod
Add move left arm server & client
Merge pull request #47 from wkentaro/move-arm

Add move left arm server & client
Merge remote-tracking branch 'upstream/master'
modified miss typo