Added requires files to MANIFEST.in and setup.py

MANIFEST.in

@@ -2,4 +2,4 @@ include README.rst
 include LICENSE
 include DOCS.rst
 include CHANGES.rst
-
+recursive-include polymorphic/templates/ *.html

setup.py

@@ -8,7 +8,10 @@ setup(
     author_email = 'bert.constantin@gmx.de',
     maintainer = 'Christopher Glass',
     maintainer_email = 'tribaal@gmail.com',
-    packages = [ 'polymorphic' ],
+    packages = [
+        'polymorphic',
+        'polymorphic.templatetags',
+    ],
     classifiers=[
         'Framework :: Django',
         'Intended Audience :: Developers',