docs: readme

README.md

@@ -7,4 +7,35 @@ mdbc: mongodb database connector
 ## todo
 
 - [ ] 完成初始化程序
-- [ ] 封装CRUD
+- [ ] 封装CRUD
+
+## usage
+
+```go
+package main
+
+import (
+    "gitter.top/coco/mdbc"
+)
+
+func main() {
+    var driver = mdbc.NewMDBC(&mdbc.Config{
+        Address:        "192.168.3.21",
+        Port:           0,
+        Username:       "admin",
+        Password:       "admin",
+        ProcessTimeout: 0,
+        ReadPref:       0,
+        DbName:         "articles",
+    }).BindModel(&mdbc.ModelArticles{})
+
+    res, err := driver.Insert().SetContext(context.Background()).Insert(&mdbc.ModelArticles{
+        Id:         "hello---------",
+        Title:      "你好，世界",
+        AvatarUrl:  "",
+        Phone:      "",
+        CreateTime: 0,
+        UpdateTime: 0,
+    })
+}
+```