creating new branch for dm

The branch includes test file (test.py). It works fine if we use the test file (with given lenslet position). However, calling it from main.py still needs parameters from others. Furthermore, the dm function now requires additional parameter (paramsActuator) in order to work.
Except for the fact that he does not take into account the real positions of the phi's. But yes I built a quite generic function for this that you can easily include.