linux58-tkg: Update readme

linux58-tkg/README.md

@@ -24,13 +24,40 @@ You can enable support for it at the beginning of the PKGBUILD file. Make sure t
 - CFS tweaks
 - using yeah TCP congestion algo by default
 - using cake network queue management system
-- using vm.max_map_count=262144 by default
+- using vm.max_map_count=524288 by default
 - cherry-picked clear linux patches
 - **optional** overrides for missing ACS capabilities
 - **optional** Fsync support (proton)
 
+## Install procedure
+
+### Arch & derivatives
 ```
 git clone https://github.com/Frogging-Family/linux-tkg.git
-cd linux-tkg/linux58-rc-tkg
+cd linux-tkg/linux58-tkg
+# Edit customization.cfg file
 makepkg -si
 ```
+
+### Ubuntu & derivatives
+```
+git clone https://github.com/Frogging-Family/linux-tkg.git
+cd linux-tkg/linux58-tkg
+# Edit customization.cfg file to at least set _distro to "Ubuntu"
+./install.sh install
+```
+To uninstall custom kernels installed through the script:
+```
+cd path/to/linux-tkg/linux58-tkg
+./install.sh uninstall
+```
+
+### Other linux distributions
+Other distros are not supported, Debian may work with the `install.sh` script. Otherwise,
+that same `install.sh` script can clone, patch and edit a `.config` file from your current distro's
+that is expected at ``/boot/config-`uname -r`.config``. Otherwise it won't work as-is.
+
+The command to do for that is:
+```
+./install.sh config
+```