tidy up and add makefile

Makefile

@@ -0,0 +1,16 @@
+PREFIX ?= /usr/local
+BINDIR ?= $(PREFIX)/bin
+
+install:
+	@echo Installing the executable to $(BINDIR)
+	@mkdir -p $(BINDIR)
+	@install -m 755 makeuser $(BINDIR)
+	@install -m 644 welcome-email.tmpl $(BINDIR)
+
+uninstall:
+	@echo Removing the executable from $(BINDIR)
+	@rm -f $(BINDIR)/makeuser
+	@rm -f $(BINDIR)/welcome-email.tmpl
+
+.PHONY: install uninstall
+