new version avaibable: graphical update

Hello,

today I uploaded an updated version with following improvements:

• the main menu is added, with options and credits.
• graphic elements are added for menu, inventory panel, character panel, skill panel...
  
• sounds are added, and music is in process (I'm waiting for the composer's permission)
  
• some code refactorisation: loading process, main game loop.

I think the next step will be to redo the map to add more moob and decoration.
I have to correct the gobelin animation too :)

And I want to change the sprite of the main character, but I haven't found nice "dark-medieval" sprite for the moment.