add badges

Author: kaiwu

README.md

@@ -2,6 +2,9 @@
 
 gleam bindings for wechat miniprogram, a.k.a weapp.
 
+[![Package Version](https://img.shields.io/hexpm/v/weapp)](https://hex.pm/packages/weapp)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/weapp/)
+
 a project template and working demo which uses this package
 can be found at [wechat_dev_tools](https://github.com/kaiwu/wechat_dev_tools)
 
@@ -10,7 +13,7 @@ can be found at [wechat_dev_tools](https://github.com/kaiwu/wechat_dev_tools)
 Add the package to your gleam project
 
 ```sh
-gleam add wechat
+gleam add weapp
 ```
 
 ## Features