make help target

Make your first target 'help' to give an overview of the main targets. Running make help will search for text which starts with ## and show what that target does.

1.PHONY: help
2help: ## Print the help message.
3	@awk 'BEGIN {FS = ":.*?## "} /^[0-9a-zA-Z._-]+:.*?## / {printf "\033[36m%s\033[0m : %s\n", $$1, $$2}' $(MAKEFILE_LIST) | \
4		sort | \
5		column -s ':' -t
6
7.PHONY: clean
8clean: ## Remove generated files.
9	$(RM) $(defaults)