[happybirthdaygnome-web] Add some more TV-shows and movies that GNOME appeared in

[Andreas Nilsson <andreasn src gnome org>]

commit fc2e3a396c19ebb74743e29422edc20a990bd5e0
Author: Andreas Nilsson <anilsson redhat com>
Date:   Mon Jul 31 17:12:15 2017 +0200

    Add some more TV-shows and movies that GNOME appeared in

 index.html |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
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diff --git a/index.html b/index.html
index 085ced8..eea4c14 100644
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@@ -241,7 +241,11 @@
                         <dd>Federico Mena Quintero won the prestigious Pants Award at GUADEC 2007, which was 
held in Birmingham, UK. The Pants Award is given to an outstanding GNOME contributor each year.</dd>
                         <dt>In which movies and TV shows has GNOME made a cameo appearance?</dt>
                         <dd><a href="http://www.imdb.com/title/tt0218817/";>Antitrust (2001)</a></dd>
+                       <dd><a href="http://www.imdb.com/title/tt0813715/";>Heroes (2006)</a></dd>
+                       <dd><a href="http://www.imdb.com/title/tt4044364/";>Citizenfour (2014)</a></dd>
                         <dd><a href="http://www.usanetwork.com/mrrobot/episodes/season-1";>Mr. Robot 
(2015)</a></dd>
+                       <dd><a href="https://www.youtube.com/watch?v=8ELbX5CMomE&t=38s";>Sorry by Justin 
Bieber (2015)</a></dd>
+                       <dd><a href="http://www.imdb.com/title/tt2575988/episodes?season=4";>Silicon Valley 
(2017)</a></dd>
                         <dt>How many GNOME Foundation members are there as of June 2017?</dt>
                         <dd>We currently have 230 GNOME Foundation members as of June 2017.</dd>
                         <dt>What’s the right way to pronounce GNOME?</dt>