add links to blog posts (#72)

Author: wing328

README.md

@@ -341,6 +341,9 @@ Here are some companies/projects using OpenAPI Generator in production. To add y
 
 ## [5 - Presentations/Videos/Tutorials/Books](#table-of-contents)
 
+- 2018/05/12 - [OpenAPI Generator - community drivenで成長するコードジェネレータ](https://ackintosh.github.io/blog/2018/05/12/openapi-generator/) by [中野暁人](https://github.com/ackintosh)
+- 2018/05/15 - [Starting a new open-source project](http://jmini.github.io/blog/2018/2018-05-15_new-open-source-project.html) by [Jeremie Bresson](https://github.com/jmini)
+- 2018/05/15 - [REST API仕様からAPIクライアントやスタブサーバを自動生成する「OpenAPI Generator」オープンソースで公開。Swagger Codegenからのフォーク](https://www.publickey1.jp/blog/18/rest_apiapiopenapi_generatorswagger_generator.html) by [Publickey](https://www.publickey1.jp)
 
 ## [6 - About Us](#table-of-contents)