Added Oculus Rift&Touch support

[img]http://cdn.edgecast.steamstatic.com/steamcommunity/public/images/clans/27831095/cf3d43382ec386367f05ca3de9b68b047ac52999.jpg[/img] Added: [list] [*]Oculus Rift & Oculus Touch support [*] Zombie Boss on the level "City" and "Farm" [/list] Fixed: [list] [*]The availability of weapons after the first activation [*]Spawn zombies on the level "City" [/list]