hubapp is available for MacOS and Linux based operating systems.
Installation for MacOS is the easiest with Homebrew. If you do not have homebrew installed, click here.
brew install warrensbox/tap/hubapp
Installation for other linux operation systems.
curl -L https://raw.githubusercontent.com/warrensbox/hubapp/release/install.sh | bash
Install from source
Alternatively, you can install the binary from source here