Add default rule to Makefile

Author: davedittrich

Makefile

@@ -1,8 +1,19 @@
-.PHONY: build upload
+.PHONY: default
+default: install
 
+.PHONY: build
 build:
 	python setup.py sdist
 
+.PHONY: clean
+clean:
+	-rm -f dist/openai-*.tar.gz
+
+.PHONY: install
+install: clean build
+	python -m pip install -U dist/openai-*.tar.gz
+
+.PHONY: upload
 upload:
 	twine upload dist/openai-*.tar.gz
 	rm dist/openai-*.tar.gz