[install-guide/f21-branch] Adding a missing ostreesetup command to Kickstart

[pbokoc]

commit cca840223ba4034ed9f22f3cabf3380b0095eeb7
Author: Petr Bokoc <pbokoc at redhat.com>
Date:   Tue Jan 27 17:48:37 2015 +0100

    Adding a missing ostreesetup command to Kickstart

 en-US/Kickstart_Syntax_Reference.xml |   48 +++++++++++++++++++++++++++++++--
 1 files changed, 45 insertions(+), 3 deletions(-)
---
diff --git a/en-US/Kickstart_Syntax_Reference.xml b/en-US/Kickstart_Syntax_Reference.xml
index 2e07479..266d47a 100644
--- a/en-US/Kickstart_Syntax_Reference.xml
+++ b/en-US/Kickstart_Syntax_Reference.xml
@@ -325,11 +325,53 @@
             </para>
         </section>
         
-        <section id="sect-kickstart-commands-ostree">
-            <title>ostree - Install from an OSTree</title>
+        <section id="sect-kickstart-commands-ostreesetup">
+            <title>ostreesetup (optional) - Install from an OSTree</title>
             <para>
-                text
+                Used for OSTree installations. See <ulink url="https://wiki.gnome.org/action/show/Projects/OSTree" /> for more information about OSTree. Available options are:
             </para>
+            <variablelist>
+				<varlistentry>
+					<term><option>--osname=</option></term>
+					<listitem>
+						<para>
+							Management root for OS installation (required).
+						</para>
+					</listitem>
+				</varlistentry>
+				<varlistentry>
+					<term><option>--remote=</option></term>
+					<listitem>
+						<para>
+							Management root for OS installation (optional).
+						</para>
+					</listitem>
+				</varlistentry>
+				<varlistentry>
+					<term><option>--url=</option></term>
+					<listitem>
+						<para>
+							Repository URL (required).
+						</para>
+					</listitem>
+				</varlistentry>
+				<varlistentry>
+					<term><option>--ref=</option></term>
+					<listitem>
+						<para>
+							Name of branch inside the repository (required).
+						</para>
+					</listitem>
+				</varlistentry>
+				<varlistentry>
+					<term><option>--nogpgcheck</option></term>
+					<listitem>
+						<para>
+							Disable GPG key verification (optional).
+						</para>
+					</listitem>
+				</varlistentry>
+			</variablelist>
         </section>
         
         <section id="sect-kickstart-commands-repo">