Update Creating-OSX-packages.md

Qt offers a tool to automatize most of what needs to be done regarding its libraries.

docs/markdown/Creating-OSX-packages.md

@@ -79,9 +79,13 @@ your `Info.plist`.
 
 If you are not using any external libraries, this is all you need to
 do. You now have a full app bundle in `/tmp/myapp.app` that you can
-use. Most applications use third party frameworks and libraries,
-though, so you need to add them to the bundle so it will work on other
-peoples' machines.
+use.
+
+### External libraries 
+
+Most applications use third party frameworks and libraries.
+If it is the case for your project, you need to add them to 
+the bundle so it will work on other peoples' machines.
 
 As an example we are going to use the [SDL2](https://libsdl.org/)
 framework. In order to bundle it in our app, we first specify an
@@ -125,6 +129,24 @@ though.
 After this you have a fully working, self-contained OSX app bundle
 ready for distribution.
 
+#### Qt
+
+Qt offers a [deployment tool](https://doc.qt.io/qt-5/macos-deployment.html#macdeploy),
+called `macdeployqt`, that automatizes bundling Qt's libraries in your application folder and
+optionally create the final `.dmg` installer
+
+```console
+# cd into the folder that contains the `myapp.app` folder
+macdeployqt myapp.app -executable=myapp.app/Contents/MacOS/myapp
+```
+
+This copies the needed Qt libaries to the correct subfolders within `myapp.app`.
+The `-executable=myapp.app/Contents/MacOS/myapp` argument is
+to automatically alter the search path of the executable 
+`myapp.app/Contents/MacOS/myapp` for the Qt libraries. One can also pass the `-dmg`
+argument to create a `.dmg` installer from the updated `myapp.app` folder.
+More information is available on the tool's documentation page.
+
 ## Creating a .dmg installer
 
 A .dmg installer is similarly quite simple, at its core it is