Hidden Chambers Added

Ugh.  I had thought that I covered everything when I released the files, but in a recent play through I discovered that I had left off how to handle Hidden Chambers.  I have added this to the main card now, and placed a notice on the main page as well.  Again, sorry for my proof-reading misstep.

Hidden Chambers: Roll 1d6 to determine what is found in these chambers.  Rolling a 1 is a monster event, a 2 or 3 is loot, and 4+ is another area.