Slight changes to the upgrade docs.

public_html/docs/english/install.html

@@ -43,12 +43,13 @@ <h3><a name="preinstall">Required Software</a></h3>
         <p>To install and use Geeklog you will need to have a server running Apache or Microsoft IIS with PHP 5.3.3 or higher installed (PHP 7.X is supported). PHP extensions required include:</p>
 
         <ul>
-            <li>mbstring </li>
-            <li>bzip2 </li>
+            <li>mbstring</li>
+            <li>bzip2</li>
             <li>mysql or mysqli (To enable MySQL support)</li>
             <li>pgsql (To enable Postgresql support)</li>
             <li>OpenSSL (To enable the Geeklog OAuth Login process)</li>
             <li>JSON (For Filemanager and Database tools)</li>
+            <li>fileinfo (To enable thumbnail creation of images in articles) (for IIS only as fileinfo is integrated into Apache)</li>
         </ul>
 
         <p>You will also need either <a href="http://dev.mysql.com/downloads/">MySQL</a> 4.1.3 or later (<a href="http://mariadb.org/">MariaDB</a> 5.1 or later will also work), or <a href="http://www.postgresql.org/download/">PostgreSQL</a> 9.1.7 or greater.</p>
@@ -135,7 +136,7 @@ <h2><a name="upgrade">Upgrading</a></h2>
         <li>Depending on the version you're upgrading from:
             <ul>
                 <li><p><strong>When upgrading from Geeklog 1.4.1 or earlier</strong>: Put the <span class="tt">config.php</span> files from your old install back into their place now (the main <span class="tt">config.php</span> and those for the plugins). The install script will read these files during the upgrade to pre-populate the new Configuration admin panel with your settings. If you skip this step, you will end up with default settings for Geeklog and the pre-installed plugins.</p></li>
-                <li><p><strong>When upgrading from Geeklog 1.5.0 or later</strong>: Put the <span class="tt">db-config.php</span> and <span class="tt">siteconfig.php</span> from your old install back into their place now, overwriting the files of the same name that came in the tarball. Otherwise, you would have to enter your database credentials and other information during the upgrade process again.</p></li>
+                <li><p><strong>When upgrading from Geeklog 1.5.0 or later</strong>: You can put the <span class="tt">db-config.php</span> and <span class="tt">siteconfig.php</span> from your old install back into their place now, overwriting the files of the same name that came in the tarball. Otherwise, you would have to enter your database credentials and other information during the upgrade process again.</p></li>
             </ul>
         </li>
         <li>