Created CLI Specific (markdown)

CLI-Specific.md

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+## Launch options
+
+If you want to wrap mangohud, gamescope, gamemoderun or any other process over the game, you can't just wrap the launcher for the wrapper to work, example : `mangohud babylonia-terminal-cli`.  
+The launcher has a parameter you can use to pass special launch options, you can pass options like this :  
+
+```bash
+# %command% will be replaced by the actual command that Babylonia-terminal will generate
+babylonia-terminal-cli --options "<custom launch command> %command%"
+```
+
+So for example, if I want to wrap the game with mangohud :  
+
+```bash
+babylonia-terminal-cli --options "mangohud %command%"
+```
+
+But start the game with the `--options` parameter every time is a bit annoying, so you can just run the command with `--set-options` instead the first time you want to setup the launch options :  
+
+```bash
+babylonia-terminal-cli --set-options "mangohud %command%"
+```
+
+and the next time you want to start the launcher, you will just need to start it with `babylonia-terminal-cli`