attached sign
lots of hacking on unlocking private keys
more work, describing keys a bit
armor the signature too
progress on general files to the command line
now have a sign command that we can test
debugging progress, but can't unlock private key..

hmmmm
small fix to writing files
closer
lots of bugs
holy bejesus, it worked
include the license
partial fix for #43

but binary encoding is still wrong, we'll have to figure out how it's
different from the base64-encoded text