Add news item about the new google group

Author: sparkprime

doc/index.html

@@ -97,6 +97,9 @@
 
 <h3>News</h3>
 
+<p><b>August 09, 2014</b> We have created a <a
+href="https://groups.google.com/forum/#!forum/jsonnet">group</a> for community discussions.</p>
+
 <p><b>August 05, 2014</b> Jsonnet is currently in beta.  We are soliciting feedback from programming
 languages experts and potential users.  Based on this feedback we may make backwards-incompatible
 changes to the language in the near future.  After this process, there will be a v1.0 release that

doc/index.html.jinja

@@ -2,6 +2,9 @@
 
 <h3>News</h3>
 
+<p><b>August 09, 2014</b> We have created a <a
+href="https://groups.google.com/forum/#!forum/jsonnet">group</a> for community discussions.</p>
+
 <p><b>August 05, 2014</b> Jsonnet is currently in beta.  We are soliciting feedback from programming
 languages experts and potential users.  Based on this feedback we may make backwards-incompatible
 changes to the language in the near future.  After this process, there will be a v1.0 release that