DOC: More info for pip.

setup.py

@@ -154,6 +154,15 @@ def setup_package():
         long_description_content_type="text/markdown",
         author='Timm Fitschen',
         author_email='t.fitschen@indiscale.com',
+        url='https://www.caosdb.org',
+        license="AGPLv3+",
+        classifiers=[
+            "Programming Language :: Python :: 3",
+            "License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)",
+            "Operating System :: OS Independent",
+            "Topic :: Database",
+            "Topic :: Scientific/Engineering :: Information Analysis",
+        ],
         packages=find_packages('src'),
         python_requires='>=3.6',
         package_dir={'': 'src'},