Merge pull request #1 from rtyler/master

Minor Makefile change
Expand payload

The update allows Roxanne to accept and return messages of
arbitrary size. Before this, messages and responses were
limited to 64KB.
Merge branch 'master' of github.com:rothrock/Roxanne
Improve protocol

Centralize the decomposition of commands and args.

Got rid of slashes. arguments are now space-separated.
Hopefully this will help with using base64 for values.
Updated Protocol

Improved the response protocol with a status field and
byte length of response payload.