Add ToastMessage class summary

Signed-off-by: seungha.son <seungha.son@samsung.com>
Change-Id: I066e0dce50dd26ea5f84ea5a4adae7eafa176331

diff --git a/src/Tizen.Applications.ToastMessage/Tizen.Applications/ToastMessage.cs b/src/Tizen.Applications.ToastMessage/Tizen.Applications/ToastMessage.cs
index 9b85824..fd136b1 100755 (executable)
--- a/src/Tizen.Applications.ToastMessage/Tizen.Applications/ToastMessage.cs
+++ b/src/Tizen.Applications.ToastMessage/Tizen.Applications/ToastMessage.cs
@@ -22,6 +22,9 @@ using System.Threading.Tasks;
 
 namespace Tizen.Applications
 {
+    /// <summary>
+    /// The class helps you create and show ToastMessage which is a view quick message for the user
+    /// </summary>
     public sealed class ToastMessage
     {