[ostree] README-install: Add a blurb about running

[Colin Walters <walters src gnome org>]

commit 11e34903377c0aad035603c2fc0d0213daf1e2ba
Author: Colin Walters <walters verbum org>
Date:   Fri Feb 24 11:56:31 2012 -0500

    README-install: Add a blurb about running

 gnomeos/README-install.md |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/gnomeos/README-install.md b/gnomeos/README-install.md
index 74c1743..8c9f5c7 100644
--- a/gnomeos/README-install.md
+++ b/gnomeos/README-install.md
@@ -26,5 +26,23 @@ Now you may need to edit your GRUB configuration.  This part varies
 for GRUB 1 versus GRUB 2.  The GRUB 2 bits in "15_ostree" don't really
 work yet.  I'm just manually writing GRUB 1 entries.
 
+Running
+-------
 
+Once you have a GRUB entry set up, just reboot.  Log in as root,
+there's no password.
+
+One of the first things you'll need to do is add a user.  The userid
+must match the one from your "host" distribution, since we share
+/home.  For example, let's say my login "walters" has uid/gid 500.
+You should run:
+
+$ groupadd -g 500 walters
+$ useradd -u 500 -g 500 walters
+$ passwd walters
+<type in a new password here>
+
+Finally, you can start gdm:
+
+$ /usr/sbin/gdm