Changed the model to control more UAVs. Now it is not yet tested because I need to find the solution to the slprj folder error.

The error is about the thing that if I don't run MATLAB as a superuser I can't write in home/fschiano/slprj , for this reason probably the solution is to run MATLAB from another folder. I will try this and make another commit as soon as possible.
Merge branch 'master' of github.com:lagadic/multiple_quadrotors