[PATCH] Doc: update git-send-email-script documentation.

Signed-off-by: NRyan Anderson <ryan@michonline.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

Documentation/git-send-email-script.txt

@@ -44,6 +44,19 @@ The options available are:
 	to set this to a space.  For example
 		--in-reply-to=" "
 
+   --chain-reply-to, --no-chain-reply-to
+	If this is set, each email will be sent as a reply to the previous
+	email sent.  If disabled with "--no-chain-reply-to", all emails after
+	the first will be sent as replies to the first email sent.  When using
+	this, it is recommended that the first file given be an overview of the
+	entire patch series.
+	Default is --chain-reply-to
+
+   --smtp-server
+	If set, specifies the outgoing SMTP server to use.  Defaults to
+	localhost.
+
+
 Author
 ------
 Written by Ryan Anderson <ryan@michonline.com>