Add Namespace Flag to Service (#5)

* added namespace option

* added namespace to config struct

* use config value

* add http-namespace flag

* update docs

pkg/server/http/server.go

@@ -13,7 +13,7 @@ func Server(opts ...Option) (http.Service, error) {
 
 	service := http.NewService(
 		http.Logger(options.Logger),
-		http.Namespace("go.micro.web"),
+		http.Namespace(options.Config.HTTP.Namespace),
 		http.Name("konnectd"),
 		http.Version(version.String),
 		http.Address(options.Config.HTTP.Addr),