Investigate status of simulation module on os x

[SergioRAgostinho]

Spoke too soon, as usual.

$ bin/pcl_sim_test_simple ../test/colored_cloud.pcd 
Manually generate a simulated RGB-D point cloud using pcl::simulation. For more information, use: bin/pcl_sim_test_simple -h
Status: Using GLEW 2.1.0
OpenGL 2.0 supported
GL_MAX_VIEWPORTS: 33371
SumReduce: levels: 4
Failed loading vertex shader
$

But this is happening even prior to your PR, so there´s a problem already for who knows how long.

Originally posted by @SergioRAgostinho in https://github.com/PointCloudLibrary/pcl/pull/3066#issuecomment-489988471

[stale[bot]]

Marking this as stale due to 30 days of inactivity. It will be closed in 7 days if no further activity occurs.

[eduardo-r]

I just found out that this error is due to the binary not finding some vert and frag files, which are GL fragment and vertex shader config/property files These can be copied from simulation/src/ to the location of the binary you are running, e.g. bin/

Hope that helps