Fix robotpkg dir into README
Another fix into README
Merge pull request #1 from cyrilleberger/master

use ROBOTPKG_BASE environment variable to find GDHE, Jafar and Viam.
Uncomment hardware join code in stop function
Calculate and store timestamps_correction in the first callback

It looks like we were nor able to get data from bag files because the
timestamps were in the past from the start time. I don't know if it's
the correct way of fixing the problem but at least seems more likely
to be correct.
Change image size to 320x240 pixels
Change camera frequency to one from camera topic
Fix CAMERA_POSE parameter to the ones from the linkquad

Also add a comment with parameters from camera_info topic
Remove direct include to rtslam/sensorAbstract.hpp
Include functions to catch signals
Update README