Reference file errors fixed, disassembly working

I had some errors in my opcode reference file. When I copied any item
that ended in "e", my spreadsheet editor interpreted this as scientific
notation and dropped the "e".

I was also skipping too many lines at the top.

The script actually diassembles code successfully now. I haven't done a
robust test or anything, but it iterates through the entire file and
prints instruction names and arguments.