update: Added position resetting for robots

* Added position resetting which should take place after a goal is
  scored.

Signed-off-by: mr.Shu <mr@shu.io>
Merge branch 'master' of github.com:xlcteam/py-soccersim
update: Refactored robot.d into robot.data

* Refactored robot.d into robot.data.
* Added a .stop function for Robot for readability.

Signed-off-by: mr.Shu <mr@shu.io>