Add version numbers; make app title configurable

Makefile

@@ -9,7 +9,7 @@ DOCKER_RUN = $(DOCKER_COMPOSE) run --rm app
 COMPOSER = $(DOCKER_RUN) composer
 PHPUNIT = $(DOCKER_RUN) vendor/bin/phpunit
 
-.PHONY: all clean \
+.PHONY: all clean VERSION \
 	docker-up docker-up-detached docker-down docker-restart docker-build docker-rebuild docker-purge docker-logs docker-run \
 	composer-install composer-install-no-dev composer-update composer-cmd \
 	test phpunit open-coverage
@@ -94,9 +94,17 @@ open-coverage:
 	$(or $(BROWSER),firefox) coverage/index.html
 
 
+# Version management
+# ------------------
+
+# Create VERSION file from current git tag
+version:
+	git describe | tee VERSION
+
+
 # Clean up
 # --------
 
 # Remove vendor directory, phpunit caches and other files that have been generated
 clean: docker-down
-	rm -rf .composer vendor .phpunit.cache coverage
+	rm -rf .composer vendor .phpunit.cache coverage VERSION