* : Implemented method to calculate drone's point on map
* : Refactoring of drone position calculation
* : Implemented ability to monitor block's point on map
Drone.java : Implemented collision frame
* : Implemented block collision frame
* : Implemented collision detection of drones and blocks
* : Implemented Block type variable and reactToCollision method
Merge pull request #3 from joshleeb/collision_detection

Collision detection