New in README: reference to Qt Deploying

Signed-off-by: Stephan Linz <linz@li-pro.net>

README.md

@@ -55,4 +55,13 @@ Content
   * [Windows notes](https://github.com/fritzing/fritzing-app/wiki/1.2-Windows-notes)
   * [Linux notes](https://github.com/fritzing/fritzing-app/wiki/1.3-Linux-notes)
   * [Building Qt from Source](https://github.com/fritzing/fritzing-app/wiki/1.4-Building-Qt-from-Source)
-* [Fritzing is still free! (how to build from source)](https://siytek.com/build-fritzing)
+* [Fritzing is still free! (how to build from source)](https://siytek.com/build-fritzing)
+* [Qt Deploying](https://wiki.qt.io/Deploying)
+  * [CQtDeployer - Universal Deployment Utility](https://wiki.qt.io/CQtDeployer)
+    * [CQtDeployer GitHub Project](https://github.com/QuasarApp/CQtDeployer)
+  * [Deploying a Qt5 Application Linux](https://wiki.qt.io/Deploying_a_Qt5_Application_Linux)
+    * `linuxdeployqt`: [LinuxDeployQt GitHub Project](https://github.com/probonopd/linuxdeployqt)
+  * [Deploy an Application on Windows](https://wiki.qt.io/Deploy_an_Application_on_Windows)
+    * `windeployqt`: [Qt for Windows - Deployment](https://doc.qt.io/Qt-5/windows-deployment.html)
+  * [Deploying Qt Applications on macOS](https://doc.qt.io/qt-5/macos.html#deploying-applications-on-macos)
+    * `macdeployqt`: [Qt for macOS - Deployment](https://doc.qt.io/qt-5/macos-deployment.html)