Add /etc/inittab and /etc/crypttab

We are the only user of /etc/crypttab, so it makes sense
that we install.

/etc/inittab contains some instructions to help lost users.
It is very similar to /etc/init.d/README, which we also install.
diff --git a/inittab b/inittab
new file mode 100644
index 0000000..3f5e83c
--- /dev/null
+++ b/inittab
@@ -0,0 +1,16 @@
+# inittab is no longer used.
+#
+# ADDING CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.
+#
+# Ctrl-Alt-Delete is handled by /usr/lib/systemd/system/ctrl-alt-del.target
+#
+# systemd uses 'targets' instead of runlevels. By default, there are two main targets:
+#
+# multi-user.target: analogous to runlevel 3
+# graphical.target: analogous to runlevel 5
+#
+# To view current default target, run:
+# systemctl get-default
+#
+# To set a default target, run:
+# systemctl set-default TARGET.target