add pdf file icon to sidebar contact section

.gitignore

@@ -1,3 +1,4 @@
 _site/
 .sass-cache/
 .jekyll-metadata
+.jekyll-cache

_data/data.yml

@@ -25,6 +25,7 @@ sidebar:
     stack-overflow: # Number/Username, e.g. 123456/alandoe
     codewars:
     goodreads: # Number-Username, e.g. 123456-alandoe
+    pdf: http://www.africau.edu/images/default/sample.pdf
 
     languages:
       - idiom: English

_includes/contact.html

@@ -79,5 +79,11 @@
     </li>
     {% endif %}
 
+    {% if sidebar.pdf %}
+    <li class="pdf"><i class="fas fa-file-pdf"></i>
+      <a href="{{ sidebar.pdf }}" target="_blank">Resume PDF</a>
+    </li>
+    {% endif %}
+
   </ul>
 </div><!--//contact-container-->

_sass/_base.scss

@@ -80,7 +80,7 @@ p {
         box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
     }
     .contact-list {
-        .fas, .fab {
+        .fas, .fab, .far {
             margin-right: 5px;
             font-size: 18px;
             vertical-align: middle;