[install-guide/F21-rewrite] Adding info about tooltips into SummaryHub in graphical install

[pbokoc]

commit 10f43ce85495ded33fd1c4316fcd44e71c261fcc
Author: Petr Bokoc <pbokoc at redhat.com>
Date:   Wed Oct 15 14:53:21 2014 +0200

    Adding info about tooltips into SummaryHub in graphical install

 en-US/SummaryHub.xml |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/en-US/SummaryHub.xml b/en-US/SummaryHub.xml
index 49ad740..266e467 100644
--- a/en-US/SummaryHub.xml
+++ b/en-US/SummaryHub.xml
@@ -37,12 +37,18 @@
 		</listitem>
 	</itemizedlist>
 	<para>
-		A message is displayed at the bottom of the summary screen, and the <guilabel>Begin Installation</guilabel> button is greyed out, as long as at least one item has not been configured yet.
+		A warning message is displayed at the bottom of the summary screen, and the <guilabel>Begin Installation</guilabel> button is greyed out, as long as at least one item has not been configured yet.
 	</para>
 	<para>
 		<remark>TODO: screen showing all the different states</remark>
 	</para>
 	<para>
+		Each screen also has an explanatory text below its title, showing settings currently configured in that screen. This text may be concatenated; in that case, move your mouse cursor over it and wait until a tooltip with the full text appears.
+	</para>
+	<para>
+		<remark>TODO: screen showing shortened text on a spoke and a full tooltip</remark>
+	</para>
+	<para>
 		Once you configure everything required for the installation, you can press the <guilabel>Begin Installation</guilabel> button to start installing &PRODUCT;. Note that as the text below this button says, nothing will be written to your hard drive before you press this button. You can press <guilabel>Quit</guilabel> at any point; this will reboot your system without making any lasting changes to it.
 	</para>
 </section>