Windows

[Gjum]

Adds a data file for the inventory windows.

Closes #37.

[Gjum]

Maybe add

"openedWith": [
  {type:"entity", id:100}
]

to specify how a window can be opened.

type can be block or entity at the moment.

Possible names for the list:

• openedWith
• openedBy
• openedOn
• interactingObjects

[rom1504]

Need to add a line in the README saying we add the data to that file manually.

Or maybe we can generate it using http://wiki.vg/Inventory#Windows (and possibly http://minecraft.gamepedia.com/Inventory#External_inventories )