Adding makefile

Makefile

@@ -0,0 +1,66 @@
+.PHONY: clean clean-test clean-pyc clean-build docs help
+.DEFAULT_GOAL := help
+
+define PRINT_HELP_PYSCRIPT
+import re, sys
+
+for line in sys.stdin:
+	match = re.match(r'^([a-zA-Z_-]+):.*?## (.*)$$', line)
+	if match:
+		target, help = match.groups()
+		print("%-20s %s" % (target, help))
+endef
+export PRINT_HELP_PYSCRIPT
+
+help:
+	@python -c "$$PRINT_HELP_PYSCRIPT" < $(MAKEFILE_LIST)
+
+clean: clean-build clean-pyc clean-test ## remove all build, test, coverage and Python artifacts
+
+clean-build: ## remove build artifacts
+	rm -fr build/
+	rm -fr dist/
+	rm -fr .eggs/
+	find . -name '*.egg-info' -exec rm -fr {} +
+	find . -name '*.egg' -exec rm -f {} +
+
+clean-pyc: ## remove Python file artifacts
+	find . -name '*.pyc' -exec rm -f {} +
+	find . -name '*.pyo' -exec rm -f {} +
+	find . -name '*~' -exec rm -f {} +
+	find . -name '__pycache__' -exec rm -fr {} +
+
+clean-test: ## remove test and coverage artifacts
+	rm -fr .tox/
+	rm -f .coverage
+	rm -fr htmlcov/
+	rm -fr .pytest_cache
+
+lint: ## check style with flake8
+	black gitinspector --line-length 120
+	find . -name '*.py' -exec autopep8 -i {} --max-line-length=120 \;
+	flake8 gitinspector tests --max-line-length=120
+
+test: ## run tests quickly with the default Python
+	py.test
+
+test-debug: ## run tests with debugging enabled
+	LOGLEVEL=debug; py.test -s --pdb
+
+test-coverage: ## check code coverage quickly with the default Python
+	coverage run --source gitinspector -m pytest
+	coverage report -m
+
+release: dist ## package and upload a release
+	twine upload dist/*
+
+dist: clean ## builds source and wheel package
+	python3 setup.py sdist
+	python3 setup.py bdist_wheel
+	ls -l dist
+
+install: clean ## install the package to the active Python's site-packages
+	python3 setup.py install
+
+requirements:
+	pipenv lock -r --dev > requirements_dev.txt