response.json is now a method, not a property

When the requests library reached version 1.0, it changed response.json
to be a method instead of a property. Update the examples accordingly.
supporting easy syntax for testing querystrings. closes #25
releasing 0.5.6
Merge pull request #24 from lorin/patch-1

response.json is now a method, not a property. Thank you @lorin
py3k support
Add ability set callback functions for response bodies
remove commented out code
use __str__ instead of __unicode__
adding formatting indexes for py26 compat
Merge pull request #28 from spulec/feature/callbacks

Feature/callbacks
adding @spulec's changes to support py3k. closes #27
raising a RuntimeError when unexpected socket methods are called,
that will leverage openning issues more easily. refs #29
bumping to 0.5.7
implementing regex support. closes #26
0.5.8
adding a little changelog to the readme
removing print statement
upgrading steadymark version
compatibility change
Additional fixes for py3k