Updated documentation

Author: RobWin

README.md

@@ -98,7 +98,8 @@ These are third party tools generated by the Swagger community. Note that not al
 - [swaggerapi](https://github.com/ROAMSYS/swaggerapi) - Creates a Swagger resource listing suitable for feeding to swagger-ui by annotating your classes and methods and handles API calls to those methods
 - [swagger-validator](https://github.com/kenshoo/swagger-validator) - Validates that definitions in a swagger.yaml match the actual Java code.
 - [swagger2markup](https://github.com/RobWin/swagger2markup) - Swagger2Markup converts a Swagger JSON or YAML file into AsciiDoc or Markdown documents which can be combined with hand-written documentation. The AsciiDoc documents can be converted into HTML5, PDF and EPUB. The Swagger2MarkupConverter supports the Swagger 1.2 and 2.0 specification. 
-- [swagger2markup-gradle-plugin](https://github.com/RobWin/swagger2markup-gradle-plugin) A Swagger2Markup Gradle Plugin which converts a Swagger JSON or YAML file into AsciiDoc or Markdown documents which can be combined with hand-written documentation. The AsciiDoc documents can be converted into HTML5, PDF and EPUB. 
+- [swagger2markup-gradle-plugin](https://github.com/RobWin/swagger2markup-gradle-plugin) - A Swagger2Markup Gradle Plugin which converts a Swagger JSON or YAML file into AsciiDoc or Markdown documents which can be combined with hand-written documentation. The AsciiDoc documents can be converted into HTML5, PDF and EPUB. 
+- [assertj-swagger](https://github.com/RobWin/assertj-swagger) - assertj-swagger is a library which compares a design-first Swagger YAML with an implementation-first Swagger JSON output (e.g. from springfox). assertj-swagger allows to validate that the implementation in compliance with the design specification. 
 
 #### JavaScript
 - [swagger-ajax-client](https://github.com/signalfx/swagger-ajax-client) - Swagger client to communicate with a Swagger server using XHR requests from browsers. Includes client-side validation of requests against the given Swagger spec.