Updated build for docs tox -edocs

Can now run tox -edocs

docs/readme.rst

@@ -7,6 +7,12 @@ APRSD
 .. image:: https://github.com/craigerl/aprsd/workflows/python/badge.svg
     :target: https://github.com/craigerl/aprsd/actions
 
+.. image:: https://img.shields.io/pypi/pyversions/aprsd.svg
+   :target: https://pypi.python.org/pypi/aprsd
+
+.. image:: https://img.shields.io/:license-apache-blue.svg
+   :target: http://www.apache.org/licenses/LICENSE-2.0
+
 .. image:: https://img.shields.io/badge/code%20style-black-000000.svg
     :target: https://black.readthedocs.io/en/stable/
 

setup.cfg

@@ -11,7 +11,8 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Topic :: Communications :: Ham Radio
     Operating System :: POSIX :: Linux
-    Programming Language :: Python
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8

tox.ini

@@ -27,6 +27,7 @@ skip_install = true
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/dev-requirements.txt
+    {toxinidir}/.
 changedir = {toxinidir}/docs
 commands =
     {envpython} clean_docs.py