Merge branch 'driver' of golang/rest into master

README.md

@@ -21,4 +21,15 @@ validator.RegisterCallbacks(svr.db)
 if err = rest.RegisterModel("webhook", &model.Repository{}); err != nil {
     log.Warnf("register repository model error: %s", err.Error())
 }
+```
+
+4.驱动选择
+
+4.1 本地驱动，默认驱动为本地驱动
+
+4.2 远程驱动
+
+远程驱动可以把`schema`数据写到如远程的数据库，使用方式为
+```bigquery
+schema.SetDriver(&schema.RemoteDriver{Url: "https://schema.nspix.com/schema"})
 ```