docs: add sirinath as a contributor (#253)

.all-contributorsrc

@@ -15,6 +15,15 @@
         "ideas",
         "userTesting"
       ]
+    },
+    {
+      "login": "sirinath",
+      "name": "Suminda Sirinath Salpitikorala Dharmasena",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/637415?v=4",
+      "profile": "http://sirinath.com/",
+      "contributions": [
+        "ideas"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -26,7 +26,7 @@
 <div align="center">
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-2-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 </div>
 
@@ -147,6 +147,7 @@ Thanks goes to these wonderful people
 <table>
   <tr>
     <td align="center"><a href="https://github.com/clickingbuttons"><img src="https://avatars1.githubusercontent.com/u/43246297?v=4" width="100px;" alt=""/><br /><sub><b>clickingbuttons</b></sub></a><br /><a href="https://github.com/questdb/questdb/commits?author=clickingbuttons" title="Code">💻</a> <a href="#ideas-clickingbuttons" title="Ideas, Planning, & Feedback">🤔</a> <a href="#userTesting-clickingbuttons" title="User Testing">📓</a></td>
+    <td align="center"><a href="http://sirinath.com/"><img src="https://avatars2.githubusercontent.com/u/637415?v=4" width="100px;" alt=""/><br /><sub><b>Suminda Sirinath Salpitikorala Dharmasena</b></sub></a><br /><a href="#ideas-sirinath" title="Ideas, Planning, & Feedback">🤔</a></td>
   </tr>
 </table>