docs: add artawood as a contributor (#153)

* docs: update README.md

* docs: update .all-contributorsrc

Author: allcontributors[bot]

.all-contributorsrc

@@ -164,6 +164,15 @@
       "contributions": [
         "translation"
       ]
+    },
+    {
+      "login": "artawood",
+      "name": "Artawood Chitamitara",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/9616109?v=4",
+      "profile": "http://www.artawood.net",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -159,6 +159,7 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
   <tr>
     <td align="center"><a href="https://github.com/pivotal-james-zcheng"><img src="https://avatars3.githubusercontent.com/u/9889963?v=4" width="100px;" alt=""/><br /><sub><b>pivotal-james-zcheng</b></sub></a><br /><a href="https://github.com/arthurdenner/react-semantic-ui-datepickers/commits?author=pivotal-james-zcheng" title="Code">💻</a></td>
     <td align="center"><a href="http://christianmoen.me"><img src="https://avatars1.githubusercontent.com/u/2778221?v=4" width="100px;" alt=""/><br /><sub><b>Christian Moen</b></sub></a><br /><a href="#translation-Cmoen11" title="Translation">🌍</a></td>
+    <td align="center"><a href="http://www.artawood.net"><img src="https://avatars0.githubusercontent.com/u/9616109?v=4" width="100px;" alt=""/><br /><sub><b>Artawood Chitamitara</b></sub></a><br /><a href="https://github.com/arthurdenner/react-semantic-ui-datepickers/commits?author=artawood" title="Documentation">📖</a></td>
   </tr>
 </table>