Added s1w1

I've added the s1w1 tile, featuring a quick conversation with a stranded merchant on a beach. I have plans to allow him to trade with the player, and give the player quests. Perhaps, it may be possible for the player to sail with the merchant, if his ship is fixed.

I'm also fairly new to GitHub, as well as programming. So if I'm doing something wrong, feel free to let me know.