adding kaggle social link (daattali#961)

* Update social-networks-links.html

* Update _config.yml

Author: chienhsiang-hung

_config.yml

@@ -64,6 +64,7 @@ social-network-links:
 #  ORCID: your ORCID ID
 #  google-scholar: your google scholar
 #  discord: invite/invite_code or users/userid 
+#  kaggle: yourname
 
 # If you want your website to generate an RSS feed, provide a description
 # The URL for the feed will be https://<your_website>/feed.xml

_includes/social-networks-links.html

@@ -311,5 +311,17 @@
    </a>
   </li>
 {%- endif -%}
+  
+{%- if site.social-network-links.kaggle -%}
+  <li class="list-inline-item">
+    <a href="https://www.kaggle.com/{{ site.social-network-links.kaggle }}" title="Kaggle">
+      <span class="fa-stack fa-lg" aria-hidden="true">
+        <i class="fas fa-circle fa-stack-2x"></i>
+        <i class="fab fa-kaggle fa-stack-1x fa-inverse"></i>
+      </span>
+      <span class="sr-only">Kaggle</span>
+   </a>
+  </li>
+{%- endif -%}
 
 </ul>