[NUI] Correct the signal related document of WidgetView

some of the docs about widgetView are incorrect.
so i fix them.

diff --git a/src/Tizen.NUI/src/public/Widget/WidgetView.cs b/src/Tizen.NUI/src/public/Widget/WidgetView.cs
index ffd2f7a..8c78791 100755 (executable)
--- a/src/Tizen.NUI/src/public/Widget/WidgetView.cs
+++ b/src/Tizen.NUI/src/public/Widget/WidgetView.cs
@@ -198,9 +198,8 @@ namespace Tizen.NUI
         private delegate void WidgetFaultedEventCallbackType(IntPtr data);
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetAdded signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when widget is added.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetAdded
@@ -232,9 +231,8 @@ namespace Tizen.NUI
         }
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetContentUpdated signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when the widget content is updated.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetContentUpdated
@@ -266,9 +264,8 @@ namespace Tizen.NUI
         }
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetDeleted signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when the widget is deleted.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetDeleted
@@ -300,9 +297,8 @@ namespace Tizen.NUI
         }
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetCreationAborted signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when the widget creation is aborted.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetCreationAborted
@@ -334,9 +330,8 @@ namespace Tizen.NUI
         }
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetUpdatePeriodChanged signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when the widget update period is changed.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetUpdatePeriodChanged
@@ -368,9 +363,8 @@ namespace Tizen.NUI
         }
 
         /// <summary>
-        /// An event for the ResourceReady signal which can be used to subscribe or unsubscribe the event handler.<br />
-        /// This signal is emitted after all resources required by a control are loaded and ready.<br />
-        /// Most resources are only loaded when the control is placed on the stage.<br />
+        /// An event for the WidgetFaulted signal which can be used to subscribe or unsubscribe the event handler.<br />
+        /// This signal is emitted when the widget process is not running.<br />
         /// </summary>
         /// <since_tizen> 3 </since_tizen>
         public event EventHandler<WidgetViewEventArgs> WidgetFaulted