add basic Makefile, remove need for global grunt-cli

Makefile

@@ -0,0 +1,17 @@
+all: deps build
+
+deps:
+	go run build.go setup
+	godep restore
+	npm install
+
+build:
+	go run build.go build
+	npm run build
+
+test:
+	godep go test -v ./pkg/...
+	npm run test
+
+run:
+	./bin/grafana-server