Update Tile.mli

ajout de movement_cost, cout différent en marche qu'en vol
Merge pull request #11 from VLanvin/interface_dev

Interface dev
Merge branch 'interface_dev' of https://github.com/VLanvin/GL_MPRI_2014 into interface_dev
Merge branch 'interface_dev' of https://github.com/VLanvin/GL_MPRI_2014 into interface_dev
Added a projection function to Position module.