Fix for the last Django and Couchdbkit
Fix some imports and settings errors
use ultrajson (ujson) as preferred json library

ultrajson claims to be an ultra-fast JSON library for Python

Package: http://pypi.python.org/pypi/ujson/
Code: https://github.com/esnme/ultrajson/
fix Database.search()

search() did pass one too many parameters to ViewResults()
bump requirements to restkit 4.2.1
fix travis tests
Merge pull request #151 from stefankoegl/fix-search

fix Database.search()
Merge pull request #139 from Natim/master

Make djangoapp compliant with Couchdb==0.8 and Django==1.4
Merge pull request #143 from stefankoegl/ujson

use ultrajson (ujson) as preferred json library
fix typo LasySet -> LazySet
remove redundant code that does nothing
more basic cleanup
remove unintended import
add Daniel Roberts & RÃ©my Hubscherto THANKS
bump to 0.6.4
Merge branch 'master' of https://github.com/benoitc/couchdbkit into patch-1