Update 0.2 - Save System

Hello there !

Here's the first update of World of Minecraft :

• Fix player movement.
• Save system. You can create your character and save your in game progression (xp and level).
• Different skins for your character.
• Make some texture more "minecraft" like.
• Add XP bar UI.
• Bugfixes.

For the moment only blood elf and mage class are available. More class will come later...