Clean ups.

setup.py

@@ -25,7 +25,7 @@
 
 setup(name='DocumentTemplate',
       version=version,
-      url='http://pypi.python.org/pypi/DocumentTemplate',
+      url='https://github.com/zopefoundation/DocumentTemplate',
       license='ZPL 2.1',
       description="Document Templating Markup Language (DTML)",
       author='Zope Foundation and Contributors',
@@ -36,7 +36,7 @@
       classifiers=[
           "Development Status :: 6 - Mature",
           "Environment :: Web Environment",
-          "Framework :: Zope2",
+          "Framework :: Zope :: 4",
           "License :: OSI Approved :: Zope Public License",
           "Operating System :: OS Independent",
           "Programming Language :: Python",
@@ -47,6 +47,7 @@
           "Programming Language :: Python :: 3.6",
           "Programming Language :: Python :: Implementation :: CPython",
       ],
+      keywords='DTML template zope HTML SQL web markup',
       install_requires=[
           'AccessControl >= 4.0a5',
           'Acquisition',