2.1.0

Added close_fds=True to the subprocess.Popen call. Prevents the
webserver port from being held in linux and renders launchhidden.vbs in
windows obsolete. Thanks Lord_Gaav!
Removed LaunchHidden.vbs
Added custom icon to AHK script + cleaned/fixed it up a bit.
Tiny cleanup to steam-launch.sh, no version bump.