add android download options for browsers other than chrome

launch.html

@@ -177,6 +177,21 @@
             </a>
           </div>
 
+          <!-- Android -->
+          <div id="androidDownload" class="download hidden">
+            <h2 data-i18n="downloads.android.title">
+              Jitsi Meet for Android
+            </h2>
+
+            <p data-i18n="downloads.android.description">
+              Install the Jitsi Meet app and then try opening the meeting again.
+            </p>
+
+            <a id="androidLink" class="button secondary" target="_blank" rel="noopener noreferrer" data-i18n="downloads.android.button">
+              Download Jitsi for Android
+            </a>
+          </div>
+
           <!-- unknown -->
           <div id="otherDownload" class="download hidden">
             <h2 data-i18n="downloads.other.title">