Rename and licence

  * Added `LICENSE.md` with BSD-3-Clause.
  * Renamed the project from `pylofer` (PYLOns proFilER)
    to `pyprol` (PYthon PROfiLer).
  * Added `sqlalchemy` as dependency (in future we will use an other
    way to talk to databases. Because of the fact that we maybe will
    measure our own database operations.
  * Removed the now not necessary `MeasureServer` and `MeasureClient`.
    They are now in ServerStorage.
  * Changes in `Configuration` about the order of instrumentations.