Merge pull request #5 from git9527/fix-image-display-in-option

update version

Author: git9527

back.html

@@ -102,7 +102,7 @@
 
 </div>
 
-<div id="back-footer" class="footer">v3.12，作者：git9527</div>
+<div id="back-footer" class="footer">v3.13，作者：git9527</div>
 
 <script>
 

front.html

@@ -11,7 +11,7 @@
   </div>
 </div>
 
-<div id="front-footer" class="footer">v3.12，作者：git9527</div>
+<div id="front-footer" class="footer">v3.13，作者：git9527</div>
 
 <div id="settingsModal" class="modal">