add readme

Makefile

@@ -1,9 +1,8 @@
-
 build:
-	CGO_ENABLED=1 go build -mod=vendor -o service main.go
+	CGO_ENABLED=1 go build -mod=vendor -tags=embed -o service main.go
 
 build-static:
-	CGO_ENABLED=1 go build -mod=vendor -tags=embed -o service main.go
+	npm --prefix static ci && npm --prefix static run build
 
 build-armhf:
 	GOARCH=arm \