Add Makefile

Fixes issue #177 (using a different branch than the originally-proposed one).

* phy1729/makefile:
  Makefile: Add default for INSTALL
  Makefile: exit non-zero for a failed test
  Makefile: Add test target
  Add Makefile

Makefile

@@ -0,0 +1,20 @@
+NAME=zsh-syntax-highlighting
+
+INSTALL?=install -c
+PREFIX?=/usr/local
+SHARE_DIR=$(DESTDIR)$(PREFIX)/share/$(NAME)
+
+install:
+	$(INSTALL) -d $(SHARE_DIR)
+	cp -r zsh-syntax-highlighting.zsh highlighters $(SHARE_DIR)
+
+test:
+	@result=0
+	@for test in highlighters/*; do \
+		if [ -d $$test/test-data ]; then \
+			echo "Running test $${test##*/}"; \
+			zsh tests/test-highlighting.zsh "$${test##*/}"; \
+			: $$(( result |= $$? )); \
+		fi \
+	done
+	@exit $$result