Added a new shed in the back yard.

It has a few gardening tools, 
but most of the space is available for guest to store items (such as luggage - also potentially bikes, although the shed is not super secure).

Details about the shed:
* It is waterproof.
* It does have a combination padlock, but that is minimal security because if someone wanted to break into the shed, they could
     (I give guests the padlock combination) 
* It has some shelves.