Added note to agenda

Author: Yamroza

_includes/agenda-slider.html

@@ -6,10 +6,10 @@
     <div class="row">
         <div class="col-lg-12">
             <h2>/ Agenda</h2>
-            <!-- <p>
-                Below we present the draft of the conference agenda, it may change. 
-                The details will be announced in the following days.
-            </p> -->
+            <p>
+                Participation in all events is <strong>free of charge</strong> and open to everybody.
+                You can register to any event by looking through the agenda days and clicking on <span style="color:#FF66C4">>Register here!</span> links.
+            </p>
         </div>
     </div>
     <div class="row">