Port 'Getting Started' from Old Docs

docs/guides/samples/first-steps.cs

@@ -0,0 +1,34 @@
+using Discord;
+
+class Program
+{
+    // Convert our sync-main to an async main method
+    static void Main(string[] args) => new Program().Run().GetAwaiter().GetResult();
+
+    // Create a DiscordClient with WebSocket support
+    private DiscordSocketClient client;
+
+    public async Task Run()
+    {
+        client = new DiscordSocketClient();
+        
+        // Place the token of your bot account here
+        string token = "aaabbbccc";
+
+        // Hook into the MessageReceived event on DiscordSocketClient
+        client.MessageReceived += async (message) =>
+        {   // Check to see if the Message Content is "!ping"
+            if (message.Content == "!ping")
+                // Send 'pong' back to the channel the message was sent in
+                await message.Channel.SendMessageAsync("pong");
+        };
+
+        // Configure the client to use a Bot token, and use our token
+        await client.LoginAsync(TokenType.Bot, token);
+        // Connect the client to Discord's gateway
+        await client.ConnectAsync();
+
+        // Block this task until the program is exited.
+        await Task.Delay(-1);
+    }
+}