Graphics and SFX Changes

* Adds Background parallax images (not exactly parallax since we have a fixed camera)
* Adds SFX
* Fixes Pickable collisions and SFX playback

collectables/Apple.gd

@@ -4,8 +4,11 @@ export var health=10
 func _ready():
 	$AnimationPlayer.play("idle")
 
-
 func _on_Area2D_body_entered(body):
 	if (body.name=="Player"):
 		body.health += health
-		queue_free()
+		self.hide()
+		$pickup.play()
+
+func _on_pickup_finished():
+	queue_free()