Fixed #6039 -- Modified Atom example to be standard compliant. Thanks to...

For example, to create an Atom 1.0 feed and print it to standard output::

    >>> from django.utils import feedgenerator

    >>> from datetime import datetime

    >>> f = feedgenerator.Atom1Feed(

    ...     title=u"My Weblog",

    ...     link=u"http://www.example.com/",

    ...     description=u"In which I write about what I ate today.",

    ...     language=u"en")

    ...     language=u"en",

    ...     author_name=u"Myself",

    ...     feed_url=u"http://example.com/atom.xml")

    >>> f.add_item(title=u"Hot dog today",

    ...     link=u"http://www.example.com/entries/1/",

    ...     pubdate=datetime.now(),

    ...     description=u"<p>Today I had a Vienna Beef hot dog. It was pink, plump and perfect.</p>")

    >>> print f.writeString('UTF-8')

    <?xml version="1.0" encoding="UTF-8"?>