Merge pull request #20 from marcoscaceres/gh-pages

Added note about dereferencing: Giri approved the text (http://lists.w3.org/Archives/Public/public-sysapps/2013May/0045.html)
Made an empty response body a must. Added guidance of dev tools.
Fixed typo (HTML WG should be SysApps)
Merge pull request #22 from marcoscaceres/response_bodies

Made an empty response body a must. Added guidance of dev tools (closes #21)
fixed typos (closes #26)
Merge pull request #27 from marcoscaceres/typos

fixed typos (closes #26)
Fixed up how to contribute
fix typo
Merge pull request #31 from rscohn2/patch-1

fix typo
Relaxed sniff requirement (closes #32)
Merge pull request #33 from sysapps/relax_sniff

Relaxed sniff requirement (closes #32)
added link to test suite (closes #30)
Merge pull request #34 from marcoscaceres/test_suite_link

Small, non-normative addition, so merging.