Add location service (#29)

* Add location service

* Update README.md

location/subscriber/subscriber.go

@@ -0,0 +1,21 @@
+package subscriber
+
+import (
+	"context"
+	"log"
+
+	"github.com/micro/services/location/domain"
+	proto "github.com/micro/services/location/proto"
+)
+
+var (
+	Topic = "location"
+)
+
+type Location struct{}
+
+func (g *Location) Handle(ctx context.Context, e *proto.Entity) error {
+	log.Printf("Saving entity ID %s", e.Id)
+	domain.Save(domain.ProtoToEntity(e))
+	return nil
+}