doc: add Practical Go Programming to front page and docs.html

R=r
CC=golang-dev
http://codereview.appspot.com/3391042

Committer: Andrew Gerrand <adg@golang.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/doc/frontpage.css b/doc/frontpage.css
index debc9aa44..bcdca6401 100644
--- a/doc/frontpage.css
+++ b/doc/frontpage.css
@@ -77,6 +77,9 @@ span.keyword {
 #content-videos .thumbnail._003 {
   background: url(/doc/video-003.png);
 }
+#content-videos .thumbnail._004 {
+  background: url(/doc/video-004.png);
+}
 #content-videos a.video {
   display: inline-block;
   width: 150px;