docs: update README.md

Author: allcontributors[bot]

README.md

@@ -1,5 +1,5 @@
 # react-swipeable-list
-[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-3-orange.svg?style=flat-square)](#contributors)
 
 <h3 align="center">
   Swipeable list component for React.
@@ -52,6 +52,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   <tr>
     <td align="center"><a href="https://github.com/marekrozmus"><img src="https://avatars3.githubusercontent.com/u/26272040?v=4" width="100px;" alt="marekrozmus"/><br /><sub><b>marekrozmus</b></sub></a><br /><a href="https://github.com/sandstreamdev/react-swipeable-list/commits?author=marekrozmus" title="Code">💻</a> <a href="https://github.com/sandstreamdev/react-swipeable-list/commits?author=marekrozmus" title="Documentation">📖</a> <a href="https://github.com/sandstreamdev/react-swipeable-list/commits?author=marekrozmus" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://github.com/jakubbogacz"><img src="https://avatars3.githubusercontent.com/u/26272028?v=4" width="100px;" alt="jakubbogacz"/><br /><sub><b>jakubbogacz</b></sub></a><br /><a href="#review-jakubbogacz" title="Reviewed Pull Requests">👀</a> <a href="#ideas-jakubbogacz" title="Ideas, Planning, & Feedback">🤔</a></td>
+    <td align="center"><a href="https://github.com/sandstreamdevelopment"><img src="https://avatars2.githubusercontent.com/u/44231396?v=4" width="100px;" alt="sandstreamdevelopment"/><br /><sub><b>sandstreamdevelopment</b></sub></a><br /><a href="#business-sandstreamdevelopment" title="Business development">💼</a> <a href="#financial-sandstreamdevelopment" title="Financial">💵</a> <a href="#ideas-sandstreamdevelopment" title="Ideas, Planning, & Feedback">🤔</a></td>
   </tr>
 </table>