Tank should now move forward for a duration that is a function of the distance to the destination

Signed-off-by: James Marsh <james.marsh124@gmail.com>
Local commit
Merge branch 'master' of https://github.com/evangallo/EECS290Tanks

Conflicts:
	EECS290Tanks/Assets/Scripts/TankAI.cs
Time spent moving forwards should now correspond to distance to destination

Signed-off-by: James Marsh <james.marsh124@gmail.com>