Merge pull request #1 from Amarcolina/master

Added skeleton methods for level generation.
Merge pull request #2 from Amarcolina/master

Updated generation code
Updated LevelGeneration, added helpers to TileMap and Tile

Updated LevelGeneration methods.

Added different helpers:
-createTile(type) in Tile
-setTile(x,y,tile) in TileMap
Updated LevelGeneration

Removed constructor (width & height <- TileMap)
Fixing mistakes
Merge pull request #2 from mentatzoe/master

Updated LevelGeneration, added helpers to TileMap and Tile