Add voice guide

docs/guides/samples/joining_audio.cs

@@ -1,15 +1,10 @@
-// Create an IAudioClient, and store it for later use
-private IAudioClient _audio;
-
-// Create a Join command, that will join the parameter or the user's current voice channel
 [Command("join")]
-public async Task JoinChannel(IUserMessage msg,
-    IVoiceChannel channel = null)
+public async Task JoinChannel(IVoiceChannel channel = null)
 {
     // Get the audio channel
     channel = channel ?? (msg.Author as IGuildUser)?.VoiceChannel;
     if (channel == null) { await msg.Channel.SendMessageAsync("User must be in a voice channel, or a voice channel must be passed as an argument."); return; }
 
-    // Get the IAudioClient by calling the JoinAsync method
-    _audio = await channel.JoinAsync();
+    // For the next step with transmitting audio, you would want to pass this Audio Client in to a service.
+    var audioClient = await channel.ConnectAsync();
 }