Add @fffx as a contributor

.all-contributorsrc

@@ -11,7 +11,7 @@
       "login": "nikolalsvk",
       "name": "Nikola Đuza",
       "avatar_url": "https://avatars2.githubusercontent.com/u/3028124?v=4",
-      "profile": "http://nikoladjuza.me/",
+      "profile": "https://nikolalsvk.github.io",
       "contributions": [
         "question",
         "code",
@@ -168,6 +168,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "fffx",
+      "name": "fangxing",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/11586335?v=4",
+      "profile": "https://github.com/fffx",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoType": "github"

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://semaphoreci.com/api/v1/renderedtext/render_async/branches/master/shields_badge.svg)](https://semaphoreci.com/renderedtext/render_async)
-[![All Contributors](https://img.shields.io/badge/all_contributors-17-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-18-orange.svg?style=flat-square)](#contributors)
 [![Gem Version](https://badge.fury.io/rb/render_async.svg)](https://badge.fury.io/rb/render_async)
 [![Code Climate](https://codeclimate.com/github/renderedtext/render_async/badges/gpa.svg)](https://codeclimate.com/github/renderedtext/render_async)
 [![Test Coverage](https://codeclimate.com/github/renderedtext/render_async/badges/coverage.svg)](https://codeclimate.com/github/renderedtext/render_async/coverage)
@@ -507,10 +507,10 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
 
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
 <!-- prettier-ignore -->
-| [<img src="https://avatars2.githubusercontent.com/u/3028124?v=4" width="100px;"/><br /><sub><b>Nikola Đuza</b></sub>](http://nikoladjuza.me/)<br />[💬](#question-nikolalsvk "Answering Questions") [💻](https://github.com/renderedtext/render_async/commits?author=nikolalsvk "Code") [📖](https://github.com/renderedtext/render_async/commits?author=nikolalsvk "Documentation") [👀](#review-nikolalsvk "Reviewed Pull Requests") | [<img src="https://avatars0.githubusercontent.com/u/3866868?v=4" width="100px;"/><br /><sub><b>Colin</b></sub>](http://www.colinxfleming.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=colinxfleming "Code") [📖](https://github.com/renderedtext/render_async/commits?author=colinxfleming "Documentation") [💡](#example-colinxfleming "Examples") | [<img src="https://avatars2.githubusercontent.com/u/334273?v=4" width="100px;"/><br /><sub><b>Kasper Grubbe</b></sub>](http://kaspergrubbe.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=kaspergrubbe "Code") | [<img src="https://avatars2.githubusercontent.com/u/163584?v=4" width="100px;"/><br /><sub><b>Sai Ram Kunala</b></sub>](https://sairam.xyz/)<br />[📖](https://github.com/renderedtext/render_async/commits?author=sairam "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/3065882?v=4" width="100px;"/><br /><sub><b>Josh Arnold</b></sub>](https://github.com/nightsurge)<br />[💻](https://github.com/renderedtext/render_async/commits?author=nightsurge "Code") [📖](https://github.com/renderedtext/render_async/commits?author=nightsurge "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/107798?v=4" width="100px;"/><br /><sub><b>Elad Shahar</b></sub>](https://eladshahar.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=SaladFork "Code") [💡](#example-SaladFork "Examples") | [<img src="https://avatars3.githubusercontent.com/u/232392?v=4" width="100px;"/><br /><sub><b>Sasha</b></sub>](http://www.revzin.co.il)<br />[💻](https://github.com/renderedtext/render_async/commits?author=sasharevzin "Code") [📖](https://github.com/renderedtext/render_async/commits?author=sasharevzin "Documentation") |
+| [<img src="https://avatars2.githubusercontent.com/u/3028124?v=4" width="100px;"/><br /><sub><b>Nikola Đuza</b></sub>](https://nikolalsvk.github.io)<br />[💬](#question-nikolalsvk "Answering Questions") [💻](https://github.com/renderedtext/render_async/commits?author=nikolalsvk "Code") [📖](https://github.com/renderedtext/render_async/commits?author=nikolalsvk "Documentation") [👀](#review-nikolalsvk "Reviewed Pull Requests") | [<img src="https://avatars0.githubusercontent.com/u/3866868?v=4" width="100px;"/><br /><sub><b>Colin</b></sub>](http://www.colinxfleming.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=colinxfleming "Code") [📖](https://github.com/renderedtext/render_async/commits?author=colinxfleming "Documentation") [💡](#example-colinxfleming "Examples") | [<img src="https://avatars2.githubusercontent.com/u/334273?v=4" width="100px;"/><br /><sub><b>Kasper Grubbe</b></sub>](http://kaspergrubbe.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=kaspergrubbe "Code") | [<img src="https://avatars2.githubusercontent.com/u/163584?v=4" width="100px;"/><br /><sub><b>Sai Ram Kunala</b></sub>](https://sairam.xyz/)<br />[📖](https://github.com/renderedtext/render_async/commits?author=sairam "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/3065882?v=4" width="100px;"/><br /><sub><b>Josh Arnold</b></sub>](https://github.com/nightsurge)<br />[💻](https://github.com/renderedtext/render_async/commits?author=nightsurge "Code") [📖](https://github.com/renderedtext/render_async/commits?author=nightsurge "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/107798?v=4" width="100px;"/><br /><sub><b>Elad Shahar</b></sub>](https://eladshahar.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=SaladFork "Code") [💡](#example-SaladFork "Examples") | [<img src="https://avatars3.githubusercontent.com/u/232392?v=4" width="100px;"/><br /><sub><b>Sasha</b></sub>](http://www.revzin.co.il)<br />[💻](https://github.com/renderedtext/render_async/commits?author=sasharevzin "Code") [📖](https://github.com/renderedtext/render_async/commits?author=sasharevzin "Documentation") |
 | :---: | :---: | :---: | :---: | :---: | :---: | :---: |
 | [<img src="https://avatars3.githubusercontent.com/u/50223?v=4" width="100px;"/><br /><sub><b>Ernest Surudo</b></sub>](http://elsurudo.com)<br />[💻](https://github.com/renderedtext/render_async/commits?author=elsurudo "Code") | [<img src="https://avatars1.githubusercontent.com/u/334809?v=4" width="100px;"/><br /><sub><b>Kurtis Rainbolt-Greene</b></sub>](https://kurtis.rainbolt-greene.online)<br />[💻](https://github.com/renderedtext/render_async/commits?author=krainboltgreene "Code") | [<img src="https://avatars2.githubusercontent.com/u/59744?v=4" width="100px;"/><br /><sub><b>Richard Schneeman</b></sub>](https://www.schneems.com)<br />[📖](https://github.com/renderedtext/render_async/commits?author=schneems "Documentation") | [<img src="https://avatars1.githubusercontent.com/u/75705?v=4" width="100px;"/><br /><sub><b>Richard Venneman</b></sub>](https://www.cityspotters.com)<br />[📖](https://github.com/renderedtext/render_async/commits?author=richardvenneman "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/381395?v=4" width="100px;"/><br /><sub><b>Filipe W. Lima</b></sub>](https://github.com/filipewl)<br />[📖](https://github.com/renderedtext/render_async/commits?author=filipewl "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/3135638?v=4" width="100px;"/><br /><sub><b>Jesús Eduardo Clemens Chong</b></sub>](https://github.com/eclemens)<br />[💻](https://github.com/renderedtext/render_async/commits?author=eclemens "Code") | [<img src="https://avatars3.githubusercontent.com/u/1935686?v=4" width="100px;"/><br /><sub><b>René Klačan</b></sub>](https://github.com/reneklacan)<br />[💻](https://github.com/renderedtext/render_async/commits?author=reneklacan "Code") |
-| [<img src="https://avatars1.githubusercontent.com/u/1313442?v=4" width="100px;"/><br /><sub><b>Gil Gomes</b></sub>](http://gilgomes.com.br)<br />[📖](https://github.com/renderedtext/render_async/commits?author=gil27 "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/6081795?v=4" width="100px;"/><br /><sub><b>Khoa Nguyen</b></sub>](https://github.com/ThanhKhoaIT)<br />[💻](https://github.com/renderedtext/render_async/commits?author=ThanhKhoaIT "Code") [📖](https://github.com/renderedtext/render_async/commits?author=ThanhKhoaIT "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/8645918?v=4" width="100px;"/><br /><sub><b>Preet Sethi</b></sub>](https://www.linkedin.com/in/preetsethila/)<br />[💻](https://github.com/renderedtext/render_async/commits?author=preetsethi "Code") |
+| [<img src="https://avatars1.githubusercontent.com/u/1313442?v=4" width="100px;"/><br /><sub><b>Gil Gomes</b></sub>](http://gilgomes.com.br)<br />[📖](https://github.com/renderedtext/render_async/commits?author=gil27 "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/6081795?v=4" width="100px;"/><br /><sub><b>Khoa Nguyen</b></sub>](https://github.com/ThanhKhoaIT)<br />[💻](https://github.com/renderedtext/render_async/commits?author=ThanhKhoaIT "Code") [📖](https://github.com/renderedtext/render_async/commits?author=ThanhKhoaIT "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/8645918?v=4" width="100px;"/><br /><sub><b>Preet Sethi</b></sub>](https://www.linkedin.com/in/preetsethila/)<br />[💻](https://github.com/renderedtext/render_async/commits?author=preetsethi "Code") | [<img src="https://avatars3.githubusercontent.com/u/11586335?v=4" width="100px;"/><br /><sub><b>fangxing</b></sub>](https://github.com/fffx)<br />[💻](https://github.com/renderedtext/render_async/commits?author=fffx "Code") |
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind welcome!