Add Makefile.

Makefile

@@ -0,0 +1,58 @@
+help:
+	@echo "Type \`make all\` first to get started."
+	@echo "\`make test\` for unit tests."
+	@echo "\`make lint\` to run JSLint."
+	@echo "\`make html\` to build HTML documentation."
+
+all: install
+
+install: sanity
+	npm i
+
+sanity:
+	sh script/sanity.sh
+
+test:
+	sh script/test.sh test/*.js
+
+spec:
+	sh script/test.sh --spec test/*.js
+
+smoke:
+	sh script/test.sh test/smoke/*.js
+
+smoke-spec:
+	sh script/test.sh --spec test/smoke/*.js
+
+lint:
+	# Problem? Try `make install-dev`
+	find lib test -name "*.js" -print0 | xargs -0 ./node_modules/.bin/jslint --forin
+
+DOC:=doc
+DOCS:=$(addprefix $(DOC)/, README.html HISTORY.html)
+
+html: $(DOCS)
+
+$(DOC):
+	mkdir $@
+
+$(DOCS): | $(DOC)
+
+RONN = ./node_modules/.bin/ronn
+
+$(DOC)/README.html: README.md
+	# Problem? Try `make install`
+	$(RONN) -5 $< > $@
+
+$(DOC)/HISTORY.html: HISTORY.md
+	# Problem? Try `make install`
+	$(RONN) -5 $< > $@
+
+preview: $(DOCS)
+	sh script/open.sh $?
+	touch preview
+
+clean:
+	rm -rf $(DOC) node_modules npm-*.log
+
+.PHONY: help sanity install test spec lint smoke smoke-spec html preview clean