Added the beginings of a design document.  Currently it just handles very high level structure
for copying, translating, and cleaning MORDOR assets.
Added some checks to validate that the file being read is of the appropriate size, has the right name, and so on.
First significant hack at reading in one of the data files.  There are
still lots of problems, not the least of which is that what's in the
file doesn't seem to align with whats described by previous hackers.