document Debian package download

README.md

@@ -47,6 +47,16 @@ curl -SL $(curl -s https://api.github.com/repos/ros-industrial/ros_qtc_plugin/re
 
 Note: Qt Creator from the online installer may notify you about available updates and install them when instructed to do so. The plugin API is only compatible with patch-level updates. A major or minor update will break the plugin API and Qt Creator will then refuse to load the plugin. Make sure that a compatible plugin version is available before updating Qt Creator as it is not possible to downgrade to an older Qt Creator version using the online installer. The offline installer installs a specific Qt Creator version and does not provide updates.
 
+### Debian Package
+
+```sh
+# download Qt Creator and plugin Debian packages
+wget $(./packaging/format-deb-url.py --version 14.0.2) --directory-prefix=/tmp
+wget --directory-prefix=/tmp $(curl -s https://api.github.com/repos/ros-industrial/ros_qtc_plugin/releases/latest | grep -E 'browser_download_url.*ROSProjectManager-.*-Linux-.*deb' | cut -d'"' -f 4)
+# install Debian packages
+sudo apt install /tmp/qtcreator-opensource-linux-*-*.deb /tmp/ROSProjectManager-*-Linux-*.{deb,ddeb}
+```
+
 ## Build (Source)
 
 ### Dependencies