Merge pull request #673 from ada-u/add-chatwork-provider

Add ChatWork provider to third-party list

Author: ramsey

docs/providers/thirdparty.md

@@ -30,6 +30,7 @@ Gateway | Composer Package | Maintainer
 [Box](https://github.com/stevenmaguire/oauth2-box) | stevenmaguire/oauth2-box | [Steven Maguire](https://github.com/stevenmaguire)
 [Buffer](https://github.com/tgallice/oauth2-buffer) | tgallice/oauth2-buffer | [Thomas Gallice](https://github.com/tgallice)
 [Canvas LMS](https://github.com/smtech/oauth2-canvaslms) | smtech/oauth2-canvaslms | [Seth Battis](https://github.com/battis)
+[ChatWork](https://github.com/chatwork/oauth2-chatwork-php) | chatwork/oauth2-chatwork | [Yuta Adachi](https://github.com/ada-u)
 [Clever](https://github.com/schoolrunner/oauth2-clever) | schoolrunner/oauth2-clever | [Schoolrunner](https://github.com/schoolrunner)
 [Clover](https://github.com/wheniwork/oauth2-clover) | wheniwork/oauth2-clover | [When I Work](https://github.com/wheniwork)
 [Coinbase](https://github.com/openclerk/coinbase-oauth2) | openclerk/coinbase-oauth2 | [Openclerk](https://github.com/openclerk)