Publish site-pskov with en/ru docs

pskov/en/pskov_1.0.0.html

@@ -64,6 +64,14 @@
                 text-align: left;
                 color: #444;
             }
+            #footer
+            {
+                text-align: center;
+            }
+            #lang
+            {
+                float: right;
+            }
             table
             {
                 border-collapse: collapse;
@@ -98,6 +106,10 @@
             <strong id="title">PSKOV</strong>
             <a href="pskov_1.0.0.html">Tool</a>
             <a href="education.html">Education</a>
+            <div id="lang">
+                <a href="../en/pskov_1.0.0.html">EN</a>
+                <a href="../ru/pskov_1.0.0+ru.html">RU</a>
+            </div>
         </div>
         <center><h1>
             PSKOV 1.0.0 (2019-06)
@@ -182,6 +194,11 @@
                 </tr>
             </table>
         </div></center>
+        <div id="footer">
+            The site has been generated by <a href="http://opengamestudio.org/pskov">PSKOV</a>
+            from <a href="http://github.com/ogstudio/site-pskov">this source code</a>.
+            The site is hosted by <a href="https://pages.github.com">GitHub Pages</a>.
+        </div>
         <script type="text/javascript">
             <!-- showdown.js -->
             ;/*! showdown v 2.0.0-alpha1 - 24-10-2018 */