Problem: maintainers are not able to do a release

Solution: reintroduce `make dist` and `make release`

Makefile

@@ -88,6 +88,14 @@ clean: clean-build clean-pyc clean-test ## Remove all build, test, coverage and
 reset: check-deps ## Stop and REMOVE all containers. WARNING: you will LOSE all data stored in BigchainDB.
 	@$(DC) down
 
+release: dist ## package and upload a release
+	twine upload dist/*
+
+dist: clean ## builds source (and not for now, wheel package)
+	python setup.py sdist
+	# python setup.py bdist_wheel
+	ls -l dist
+
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 # Sub targets #
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