robotpkg

image/openni_camera does not configure, with the following error:
-- checking for module 'libopenni'
-- package 'libopenni' not found

I'm not aware of any .pc file provided by any of the openni packages, so I
don't know how this is supposed to work?

Ok, pull-request updated:

- removed package openni_camera
- added package openni2_camera + sysdep on OpenNI2. This should likely be replaced by a proper robotpkg package. This package could possibly be modelled after the Debian package found here:
http://ftp.osuosl.org/pub/ros-shadow-fixed/pool/main/o/openni2/openni2_2.2.0.33-2~trusty2.debian.tar.xz
- imported depthimage_to_laserscan

While here, updated ros-vision-opencv to latest upstream release.

Note that I have created a separate issue for OpenNI2 packaging (#66)