Update Makefile

Makefile

@@ -3,11 +3,18 @@ requirements = requirements.txt
 activate = source $(venv)/bin/activate
 pip = pip
 ansible = venv/bin/ansible-playbook
+dotbot = _dotbot/bin/dotbot
 
 .PHONY: all
-install: $(ansible)
+install: $(ansible) submodules
 	$(activate) && ansible-playbook --diff --verbose ./playbook.yml
 
+.PHONY: submodules
+submodules: $(dotbot)
+
+$(dotbot):
+	git submodule update --init _dotbot
+
 .PHONY: clean
 clean:
 	rm -r venv