Fixed the reusable apps docs to use a rst file extension for the README and follow PEP8 a bit more.

Author: jezdez

docs/intro/reusable-apps.txt

@@ -130,7 +130,7 @@ this. For a small app like polls, this process isn't too difficult.
 
 2. Move the ``polls`` directory into the ``django-polls`` directory.
 
-3. Create a file ``django-polls/README.txt`` with the following contents::
+3. Create a file ``django-polls/README.rst`` with the following contents::
 
     =====
     Polls
@@ -178,23 +178,23 @@ Create a file ``django-polls/setup.py`` with the following contents::
     import os
     from setuptools import setup
 
-    README = open(os.path.join(os.path.dirname(__file__), 'README.txt')).read()
+    README = open(os.path.join(os.path.dirname(__file__), 'README.rst')).read()
 
     # allow setup.py to be run from any path
     os.chdir(os.path.normpath(os.path.join(os.path.abspath(__file__), os.pardir)))
 
     setup(
-        name = 'django-polls',
-        version = '0.1',
-        packages = ['polls'],
-        include_package_data = True,
-        license = 'BSD License', # example license
-        description = 'A simple Django app to conduct Web-based polls.',
-        long_description = README,
-        url = 'http://www.example.com/',
-        author = 'Your Name',
-        author_email = '[email protected]',
-        classifiers = [
+        name='django-polls',
+        version='0.1',
+        packages=['polls'],
+        include_package_data=True,
+        license='BSD License',  # example license
+        description='A simple Django app to conduct Web-based polls.',
+        long_description=README,
+        url='http://www.example.com/',
+        author='Your Name',
+        author_email='[email protected]',
+        classifiers=[
             'Environment :: Web Environment',
             'Framework :: Django',
             'Intended Audience :: Developers',
@@ -217,10 +217,12 @@ Create a file ``django-polls/setup.py`` with the following contents::
 6. Only Python modules and packages are included in the package by default. To
    include additional files, we'll need to create a ``MANIFEST.in`` file. The
    distribute docs referred to in the previous step discuss this file in more
-   details. To include the templates and our LICENSE file, create a file
-   ``django-polls/MANIFEST.in`` with the following contents::
+   details. To include the templates, the ``README.rst`` and our ``LICENSE``
+   file, create a file ``django-polls/MANIFEST.in`` with the following
+   contents::
 
     include LICENSE
+    include README.rst
     recursive-include polls/templates *
 
 7. It's optional, but recommended, to include detailed documentation with your