Add google analytics id to beta site

Change-Id: Ice2ad54febb39f859d79d130c2d949a0252ccd7a
diff --git a/jekyll-source/_config.yml b/jekyll-source/_config.yml
index ee1a7c1..d9b0fdb 100644
--- a/jekyll-source/_config.yml
+++ b/jekyll-source/_config.yml
@@ -21,7 +21,7 @@
 disqus_shortname:
 # if you're using disqus for comments, add the shortname here. if not, leave this value blank.
 
-google_analytics: 
+google_analytics: UA-73551813-1
 # if you have google-analytics ID, put it in. if not, edit this value to blank.
 
 host: 127.0.0.1