Merge pull request #17 from psychomario/master

update from original
Housekeeping/Consistency Updates

Updated documentation to reflect warning about TFTP file transfers
greater than 33MB (originally was labeled 100MB)

Updated documentation explaining the additional SYSLINUX files, their
version, and where we got them from

Updated SYSLINUX files to the latest stable version (6.02)

Minor whitespace and PEP8 consistency changes from #37
Merge pull request #38 from mmattioli/master

Housekeeping/Consistency Updates