Update index.hbs

Author: expikr

src/theme/index.hbs

@@ -129,6 +129,9 @@
                             <li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
                             <li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
                             <li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
+                            {{#each additional_theme}}
+                            <li role="none"><button role="menuitem" class="theme" id="{{ this }}">{{ this }}</button></li>
+                            {{/each}}
                         </ul>
                         {{#if search_enabled}}
                         <button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">