Add images for MessageBoxIcons (#683)

* added images

* cleaned up language

* Revert "cleaned up language"

This reverts commit 7f6bd2d.

* Revert "added images"

This reverts commit 9c47831.

* add table to MessageBoxIcon.xml

* Update to Win10 icons in PNGs

Author: Nic Hartley

add/media/messagebox-asterisk.gif

@@ -82,7 +82,20 @@ Private Sub Form1_FormClosing( _
     End If  
 End Sub  
 ```  
-  
+
+This table shows the different icons:
+
+|Icon|Name|
+|-|-|
+|![White X in red circle](~/add/media/messagebox-hand.png "White X in red circle")|Hand|
+|![White question mark in blue circle](~/add/media/messagebox-question.png "White question mark in blue circle")|Question|
+|![Black exclamation point in yellow triangle](~/add/media/messagebox-exclamation.png "Black exclamation point in yellow triangle")|Exclamation|
+|![White lowercase i in blue circle](~/add/media/messagebox-asterisk.png "White lowercase i in blue circle")|Asterisk|
+|![White X in red circle](~/add/media/messagebox-stop.png "White X in red circle")|Stop|
+|![White X in red circle](~/add/media/messagebox-error.png "White X in red circle")|Error|
+|![Black exclamation point in yellow triangle](~/add/media/messagebox-warning.png "Black exclamation point in yellow triangle")|Warning|
+|![White lowercase i in blue circle](~/add/media/messagebox-information.png "White lowercase i in blue circle")|Information|
+
  ]]></format>
     </remarks>
   </Docs>
@@ -286,4 +299,4 @@ End Sub
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>

add/media/messagebox-asterisk.png

@@ -23,14 +23,14 @@
   
 |||  
 |-|-|  
-|![Hand icon](~/add/media/messagebox-hand.gif "Hand icon")|Hand|  
-|![Question icon](~/add/media/messagebox-question.gif "Question icon")|Question|  
-|![Exclamation icon](~/add/media/messagebox-exclamation.gif "Exclamation icon")|Exclamation|  
-|![Asterisk icon](~/add/media/messagebox-asterisk.gif "Asterisk icon")|Asterisk|  
-|![Stop icon](~/add/media/messagebox-stop.gif "Stop icon")|Stop|  
-|![Error icon](~/add/media/messagebox-error.gif "Error icon")|Error|  
-|![Warning icon](~/add/media/messagebox-warning.gif "Warning icon")|Warning|  
-|![Information icon](~/add/media/messagebox-information.gif "Information icon")|Information|  
+|![Hand icon](~/add/media/messagebox-hand.png "Hand icon")|Hand|  
+|![Question icon](~/add/media/messagebox-question.png "Question icon")|Question|  
+|![Exclamation icon](~/add/media/messagebox-exclamation.png "Exclamation icon")|Exclamation|  
+|![Asterisk icon](~/add/media/messagebox-asterisk.png "Asterisk icon")|Asterisk|  
+|![Stop icon](~/add/media/messagebox-stop.png "Stop icon")|Stop|  
+|![Error icon](~/add/media/messagebox-error.png "Error icon")|Error|  
+|![Warning icon](~/add/media/messagebox-warning.png "Warning icon")|Warning|  
+|![Information icon](~/add/media/messagebox-information.png "Information icon")|Information|  
   
  For a sample that demonstrates several options when using the <xref:System.Windows.MessageBox>, see [MessageBox Sample](http://go.microsoft.com/fwlink/?LinkID=160023).  
   
@@ -232,4 +232,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>