add Makefile

Makefile

@@ -0,0 +1,7 @@
+ZSH ?= $(shell command -v zsh 2> /dev/null)
+
+all:
+
+pkg:
+	cd gitstatus && $(MAKE) ZSH=$(ZSH) pkg && cd ..
+	$(or $(ZSH),:) -fc 'for f in *.zsh-theme internal/*.zsh; do zcompile -R -- $$f.zwc $$f || exit; done'