Merge pull request #8 from avsm/master

Updates for Mirage 1.0
Add a small script to generate code.ml automatically from a JSON description

The JSON files come from http://httpstatus.es/
Replace the existing Code module with an auto-generated one from an up-to-date spec of HTTP codes.

This adds a lot of missing codes and some nice ocamldoc explanation about their meaning.
Merge pull request #56 from samoht/master

Add more status code