Added basic A* algorithm
Separated AStar into single class
Added path visualisation
Fixed wrong path finding
Fixed stuttering on the corner
Hidden astar
Added optimal aStar usage and following algorithm
Fixed passing corners issue
Fixed little corner stuttering
Removing stuff
Updated MeleeAI, fixed crashing on followHero()

Game was crashed when updatePathIfSeeTarget was false at the beggining

Still exists problem with wrong collision detection in the last point of
path (AStar thinks its free when first collision object in last point is
hero)
Fixed stuttering in last point of path
Merge with A* algorithm usage
Merge branch 'develop' of https://github.com/alexanderguk/Mad_Game into develop
Added missing file