Update .travis.yml

Trying a fix to the travis.yml file
Merge branch 'master' of https://github.com/nicolaje/VIBES
Merge branch 'master' of https://github.com/ENSTABretagneRobotics/VIBES

Conflicts:
	.travis.yml
Merge branch 'master' of https://github.com/ENSTABretagneRobotics/VIBES into ADDING_ROBOTS
MATLAB Client API preview should be on the repository