Following up on my previous post, Windows, Meet Linux. Linux, Meet RemoteApp, I have moved that work into a Github repository for safe storage and easy installation. Be sure to read that article first to get an idea of what's going on. Then I wrote a couple of installation scripts that would help provision a RemoteApp Linux client even faster.
GitHub source: daball/FreeRDP-RemoteApp-IntegrationScripts
Read through the documentation in the README file and follow those instructions to enable RemoteApp easily.