Demo update #31

[p]Update 0.4.27[/p]

[p]New object: steel trap[/p]
[p]New trees added[/p]
[p]First NPC added: Trader[/p]
[p]New SFX added[/p]
[p]Item price updates[/p]
[p]Updated and expanded tutorial[/p]
[p]Ability to delete saved games[/p]