Pass parsed json response for errors to be compatible with boto 2.3

The API for DynamoDBResponseError changed as a result of
https://github.com/boto/boto/issues/625
Safer handling when no json response is available
Merge pull request #4 from rhettg/344ec96b72ae76036f1a3ef12252c07f1a08e5d9

Allow for providing our own ioloop
bump version - sorta
Merge pull request #5 from rhettg/rhettg_errors

Pass parsed json response for errors to be compatible with boto 2.3
version 0.2.6
update readme and download url from setup.py
Change request attribute set for amazon auth

This is a fix for a change in the way that boto signs requests, introduced in 2.7.0
The commit hash causing this change is 4fb722fe5780f97d7b97d45e36c382e79eca315c

We previously set an attribute called `path` on our tornado requests because boto
used it to sign the request. Tornado does not use this attribute for anything. Boto
now looks for `auth_path` instead, so I am switching accordingly
version bump for dev
be non-destructive with auth changes
metadata
Merge branch 'master' of git://github.com/bitly/asyncdynamo

Conflicts:
	asyncdynamo/asyncdynamo.py