update README.md

Author: YingRui Lu

README.md

@@ -1,6 +1,8 @@
 # JSONAPI Swagger
 
-Create a JSONAPI Swagger.
+Generate JSONAPI Swagger Doc.
+
+[![Gem Version](https://img.shields.io/gem/v/jsonapi-swagger.svg)](https://rubygems.org/gems/jsonapi-swagger) [![GitHub license](https://img.shields.io/github/license/superiorlu/jsonapi-swagger.svg)](https://github.com/superiorlu/jsonapi-swagger/blob/master/LICENSE.md)
 
 ## Installation
 
@@ -24,6 +26,10 @@ Or install it yourself as:
 rails generate jsonapi:swagger User # UserResponse < JSONAPI::Resource
 ```
 
+## Resource
+- [JSONAPI](https://jsonapi.org/)
+- [Rswag](https://github.com/domaindrivendev/rswag)
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/superiorlu/jsonapi-swagger.