initial Makefile, requirements update and use nosetests

Makefile

@@ -0,0 +1,23 @@
+.DEFAULT_GOAL := help
+.PHONY: test deps style lint install help
+
+help:
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+target_dirs := tests TTS notebooks
+
+deps:	## install 🐸 requirements.
+	pip install -r requirements.txt
+
+test:	## run tests.
+	nosetests --with-cov -cov  --cover-erase --cover-package TTS tests
+
+style:	## update code style.
+	black ${target_dirs}
+	isort ${target_dirs}
+
+lint:	## run pylint linter.
+	pylint ${target_dirs}
+
+install:	## install 🐸 TTS for development.
+	pip install -e .

requirements.txt

@@ -24,6 +24,7 @@ cython
 pyyaml
 # quality and style
 nose
+coverage
 black
 isort
 pylint==2.7.4