no need of items
removed .items from docs
Fix examples after Collection.items was removed
Improve QuerySet to allow sub-classing
Fix indentation
Separate out nested dict functions into a module

Refactored to separate out all the nested dict functionality into it's
separate module to keep the main lookupy module clean and concise. The
names of the functions and their usage in both code and tests has also
been changed.

This commit introduced relative imports so the examples have also been
fixed accordingly
Refactor and rename stuff

* Eliminated some code that was unnecessary
* Renamed the nesdict.py module to dunderkey.py
* Renamed the functions inside dundekey.py as well to make them more
  intuitive
Add tox.ini file
Handle building the package in absence of README.md
Add MANIFEST file generated by sdist
Add .tox directory to .gitignore
Add dist directory to .gitignore
Update README
Convert README.md to README.rst
Update setup.py
Merge pull request #2 from naiquevin/master

merge upstream