Remove partial button documentation.

Update the version to 1.2.

Author: chrimc62

CSharp/Documentation/Dialogs.cs

@@ -90,12 +90,6 @@
     /// response and perform the action including sending a message back to the user.  The final step is to do IDialogContext.Wait 
     /// with a continuation back to MessageReceivedAsync on the next message.
     /// 
-    /// \section echoButton Echo Bot with Buttons
-    /// A number of communication channels are starting to support [Buttons] as well as text.  The %Bot %Builder provides
-    /// buttons in both PromptDialog and in %FormFlow.  Depending on the channel, buttons may differ in how they are
-    /// rendered including just rendering as text.  The easiest way to use buttons is to make use of the PromptBuilder class
-    /// to create your prompts or messages. 
-    /// 
     /// \section alarmBot Alarm Bot
     /// This example is more complex and shows how to integrate [LUIS] together with PromptDialog to create an alarm 
     /// system you can interact with through natural language.  

CSharp/Library/Properties/AssemblyInfo.cs

@@ -33,8 +33,8 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.1.0.0")]
-[assembly: AssemblyFileVersion("1.1.0.0")]
+[assembly: AssemblyVersion("1.2.0.0")]
+[assembly: AssemblyFileVersion("1.2.0.0")]
 
 [assembly: InternalsVisibleTo("Microsoft.Bot.Builder.Tests")]
 [assembly: InternalsVisibleTo("Microsoft.Bot.Sample.Tests")]