[feat]Add a title for happening now section in splashpage

app/views/conferences/show.html.haml

@@ -45,15 +45,19 @@
   = render 'header', conference: @conference, venue: @conference.venue
 
   -# happening now events
-  - if @conference.splashpage.include_happening_now
-    - if @events_schedules.any?
-      .container{style: "padding: 20;"}
-        - for event_schedule in @events_schedules
-          = render 'schedules/event', conference: @conference, event_schedule: event_schedule, event: event_schedule.event
-    - else
-      .row
-        .col-md-12
-          %h3.text-center There are no events happening now.
+  %section#happening_now
+    - if @conference.splashpage.include_happening_now
+      - if @events_schedules.any?
+        .row
+          .col-md-12
+            %h2.text-center Happening Now
+        .container{style: "padding: 20;"}
+          - for event_schedule in @events_schedules
+            = render 'schedules/event', conference: @conference, event_schedule: event_schedule, event: event_schedule.event
+      - else
+        .row
+          .col-md-12
+            %h3.text-center There are no events happening now.
 
   -# calls for content, or program
   - if @conference.splashpage.include_cfp