ENH: Add Makefile.

Makefile

+# ** header v3.0
+# This file is a part of the CaosDB Project.
+#
+# Copyright (C) 2020 IndiScale GmbH <info@indiscale.com>
+# Copyright (C) 2020 Daniel Hornung <d.hornung@indiscale.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+# ** end header
+
+# Just a collection of scripts
+
+.PHONY: all autopep8 test
+
+# Do the integration tests.
+# Accepts freestyle arguments like so:
+# `make test test_opts=test_foo.py -k test_function`
+test:
+	cd tests &&	pytest $(test_opts)
+
+# Run the tests through autopep8.
+autopep8:
+	autopep8 -ri tests
+
+# Meta target to call the other targets.
+all: autopep8 test