Update README.md

Author: djdduty

README.md

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 # gigantic.monitor
 Docker image that installs the game, checks for updates, and notifies another service when the game files have changed.
+
+Uses steamcmd cli tool for downloading and updating the game via steam, with a command like the following
+`./steamcmd.sh +@sSteamCmdForcePlatformType windows +login user pass +force_install_dir ./gigantic +app_update 327690`
+
+Unfortunately the command must have a valid user account to log in as, even if it's a dummy account, this command works under OSX and linux as well as long as the force platform flag is there.
+
+The command will run as a cron job every 10(?) minutes while at the same time incrond will handle notifying us of any file changes.