prettying up the output a little bit.
whitespace
stubbing out structs I think I'll need to read in the item file.
added ability to read signed word
Added readInt for reading item cost from mordor data 3

Added check alignment for checking that specified values in the datafile are 0.
stubbing in iteam reads
more work on fleshing out the various masks being read in.
whitespace, cleaning up comments.
still struggling with the map alignments
Added some notes about what appears to be in the MDATA3 datafile
notes on MDATA5 format