Merge pull request #21 from sappo/master

Added message description to bnf
Moved model files to src
Disabled make code for now, it's distubing
Autonumber messages if needed
Renamed zproto_c.gsl to zproto_codec_c.gsl

- as I'm adding other zproto code generators
Rebuilt grammar
Merge pull request #22 from hintjens/master

Renamed zproto_c -> zproto_codec_c
Add explicit make target for code gen
Merged zproto_bnf into zproto_codec_c

- don't need extra GSL call to generate
- invoked as function from inside zproto_codec_c
Merge pull request #23 from hintjens/master

Add explicit make target for code gen