minor changes
add class ChunkManager
template chunkManager
Merge branch 'voxel_engine' of https://github.com/ouiBonsoirTeam/iMineCraft into voxel_engine
Merge branch 'voxel_engine' of https://github.com/ouiBonsoirTeam/iMineCraft into voxel_engine

Conflicts:
	src/voxel_engine/Block.hpp