Add Changes to scratch conf website (#1746) (#1748)

* Update l10n.json

src/views/conference/2018/index/index.jsx

@@ -78,6 +78,9 @@ var ConferenceSplash = React.createClass({
                                 </tr>
                             </tbody>
                         </table>
+                        <p>
+                            <FormattedMessage id='conference-2018.registrationDate' />
+                        </p>
                     </section>
                     <section className='conf2018-panel'>
                         <p className='conf2018-panel-desc'>

src/views/conference/2018/index/l10n.json

@@ -10,7 +10,8 @@
     "conference-2018.location": "Where:",
 
     "conference-2018.desc1": "Join us for the Scratch@MIT conference, a playful gathering of educators, researchers, developers, and other members of the worldwide Scratch community.",
-    "conference-2018.desc2": "We're planning a very participatory conference, with an entire day of hands-on workshops and lots of opportunities for peer-to-peer discussion and collaboration.",
+    "conference-2018.desc2": "We're planning a very participatory conference, with an entire day of hands-on workshops and lots of opportunities for peer-to-peer discussion and collaboration. The conference is intended primarily for adults who support young people learning Scratch.",
+    "conference-2018.registrationDate": "Registration opens March 1, 2018.",
 
     "conference-2018.sessionDesc": "Interested in offering a session? We invite four types of proposals:",
     "conference-2018.sessionItem1Title": "Poster/demonstration (90 minutes).",