conf/66-void_package.md : add documentation for the new package.

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+# 66-void
+
+`66-void` is a package that can replace runit-void and provide the user a voidlinux system that cleanly boots with 66, without any hacks.
+
+## Why?
+
+If a user follows the direction in 66-void-conf.md, they will end with a voidlinux system booted with 66. The system will work and be able to switch between runit and 66 by changing either the kernel commandline, or the init symlink.
+That is really nice and flexible, but it comes with a cost. In order to keep both systems working correctly, there are two services, a runit `core-service` named switch-initutils and a 66 frontend service file with the same name.
+There change the init utilities (halt, reboot, shutdown, poweroff) to match the running init system/service manager. That is a nice and (mostly) working **hack**.
+`66-void` tries to provide a better, cleaner way to use 66, with its own "base" package that fully replaces runit-void.
+
+## How to use
+
+Assuming a user has a **working system with 66**, they only need to install the package:
+
+```
+# xbps-install -S 66-void
+```
+That is it :)
+
+After that, the kernelcommandline **should not have** `init=/usr/bin/66` anymore.
+
+#### Switch back to runit
+
+Switching to runit after installing/using 66-void, is not hard:
+
+1.First remove the 66-void package:
+
+```
+# xbps-remove 66-void
+```
+
+2.Then, install the runit-void package:
+
+```
+# xbps-install runit-void
+```
+
+3.Reboot:
+
+```
+# /etc/66/reboot
+```
+#### Switch to using 66 from using runit
+
+If after the previous procedure someone wants to switch again, the procedure is similar:
+
+1.Remove runit-void:
+
+```
+# xbps-remove runit-void
+```
+
+2.Install 66-void:
+```
+# xbps-install -S 66-void
+```
+
+3.After that, you can reboot with CTRL+ALT+DEL.
+
+
+## Contents
+
+The package contains all the non-init utilities that exists in the void-runit project. These are:
+
+- vlogger
+- zzz
+- seedrng
+- pause
+- modules-load
+
+There are accompanied by their manpages, where these are available in the upstream repository.
+
+There are also the 66 init utilities, namely:
+
+- halt
+- reboot
+- poweroff
+- shutdown
+
+as well as **init**, as a link to `/usr/bin/66`.
+
+Also included are some configuration files:
+
+- /etc/rc.local
+- /etc/rc.conf
+- /etc/os-release
+- /etc/hostname
+
+*66 does not recognise /etc/rc.conf directly, but it can be consumed by the 66boot-rcdotconf utility which reuses the values to configure the boot@system module service*
+*66 also does not use rc.local by default, but it can be used by declaring it as the `script_file` in the local-rc service.*
+*/etc/os-release and /etc/hostname are part of the os.*
+
+The basic directories and symlinks for runit are also a parta of this package, in order to enable the use of the runit 66 service that reuses runit service scripts on top of 66.