Added #4-how-does-qrcoders-architecture-look-like

Author: codebude

readme.md

@@ -76,7 +76,7 @@ Besides the normal QRCode class (which is shown in the example above) for creati
 * [PngByteQRCode<sup></sup>](https://github.com/codebude/QRCoder/wiki/Advanced-usage---QR-Code-renderers#25-pngbyteqrcode-renderer-in-detail)
 * [SvgQRCode<sup>*</sup>](https://github.com/codebude/QRCoder/wiki/Advanced-usage---QR-Code-renderers#26-svgqrcode-renderer-in-detail)
 * [UnityQRCode<sup>*</sup>](https://github.com/codebude/QRCoder/wiki/Advanced-usage---QR-Code-renderers#27-unityqrcode-renderer-in-detail)
-
+* [XamlQRCode<sup>*</sup>](https://github.com/codebude/QRCoder/wiki/Advanced-usage---QR-Code-renderers#26-xamlqrcode-renderer-in-detail)
 
 *(&ast;) - These classes are only available in the .NET Framework/.NET Standard version. If you use the PCL version (e.g. for Universal apps), you have to use either BitmapByteQRCode or PngByteQRCode classes.*