Add Xcode (#185) (#190)

Author: mtgto

index.html

@@ -157,6 +157,7 @@ <h2>No Plugin Necessary</h2>
     <li><a href="https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes-v15.0#coding-convention-support-through-editorconfig"><img src="logos/visualstudio-pro.png" alt="Visual Studio Pro"><span>Visual Studio Professional</span></a></li>
     <li><a href="https://plugins.jetbrains.com/plugin/7294-editorconfig/"><img src="logos/webStorm.png" alt="WebStorm"><span>WebStorm</span></a></li>
     <li><a href="https://workingcopy.app/"><img src="logos/working-copy.png" alt="Working Copy"><span>Working Copy</span></a></li>
+    <li><a href="https://developer.apple.com/xcode/"><img src="logos/xcode.png" alt="Xcode"><span>Xcode</span></a></li>
   </ul>
   <div style="clear: both;"></div>