Fixed link in the README

Added Eventlet backend 

Removed the special casing of Django.

Since Django 1.4 every Django project has its own `wsgi.py` file to be used as the WSGI entry point. There is no need to special case Django here.

See https://docs.djangoproject.com/en/1.4/howto/deployment/wsgi/ for more information.

Older versions of Django could also be deployed like but it wasn't encouraged as it's now nor was a wsgi.py file created automatically with every new project. https://docs.djangoproject.com/en/1.3/howto/deployment/modwsgi/

Adding Current Dir to Main + using Werkzeug's import_string

Including the current working directory in the path so that when executing the command it works as expected.

fixed the segfault - this was due to the meinheld patch_all() call. also simplified the waitress backend - fixes #1