feat(Request): Also accept query params from POSTed forms

Fixes #170
doc: Add initial set of sphinx docs

This patch includes the index page and a user guide. The user guide is mostly
finished, but still needs some love. There are also placeholders on the
index page for other sections that need to be filled out.
Merge pull request #234 from kgriffs/issues/112

doc: Add initial set of sphinx docs
doc(tutorial): Fix code block markup
Merge pull request #235 from kgriffs/issues/112

doc(tutorial): Fix code block markup
doc(README): Added link to RTD landing page
doc: Improve header spacing, fix license import
doc: tweak introduction
Updated README.md with install instructions for OSX Mavericks with XCode 5.1
Merge pull request #236 from thrawn01/osx-mavericks

Updated README.md with install instructions for OSX Mavericks with XCode 5.1
doc: Add Derrick Wippler to AUTHORS. Thanks Derrick!
doc(README): Beautify OS X installation note
Wrap default responders with global hooks wrt #223

This enables global hooks for OPTIONS and Method Not Allowed (405)
default responses. This fixes issues with CORS preflight OPTIONS
requests not getting correct headers set by custom hooks.
Drop blank lines to fix flake8 complaints wrt #233
test(falcon-bench): Add tox environments to run falcon-bench wrt #222

Added tox environments to run falcon-bench on supported pythons.
fix(test) Install coveralls for travis runs
Merge pull request #238 from sebasmagri/global-hooks-for-default-responders

Wrap default responders with global hooks wrt #233
doc(AUTHORS): Add sebasmagri to AUTHORS. Thanks Sebastián!
test(testing.create_environ): Cover missed branches

This patch adds a couple tests to ensure that a couple code branches
in create_environ are exercised.
doc(tutorial): Fix markup around inline literal text