Demo updated (0.1.3)

A have made few changed to the demo (some of the based on players feedback)
Without prolonging, here is the list:

• Save system introduced, there is a save point in mid of the demo
• Controls for keyboard slightly changed, moved running to SPACE and examine to E (enter still works)
• Fixed a few typos
• ??? tiny surprise?
• Few other minor fixes

If case of any serious bugs please let me know (especially with save system).

Thanks everyone for playing!