Add /motd command to allow user to set motd without restarting/stopping server

src/main/java/net/md_5/bungee/command/CommandMotd.java

@@ -0,0 +1,29 @@
+package net.md_5.bungee.command;
+
+import net.md_5.bungee.BungeeCord;
+import net.md_5.bungee.Permission;
+
+/**
+ * Command to set a temp copy of the motd in real-time without stopping the proxy
+ */
+public class CommandMotd extends Command
+{
+
+    @Override
+    public void execute(CommandSender sender, String[] args)
+    {
+        if (getPermission(sender) != Permission.ADMIN)
+        {
+            sender.sendMessage(ChatColor.RED + "You do not have permission to use this command");
+        } else
+        {
+            String newMOTD = "";
+            for (String s: args)
+            {
+                newMOTD = newMOTD + s + " ";
+            }
+            newMOTD = newMOTD.substring(0, newMOTD.length()-1);
+            BungeeCord.instance.config.motd = newMOTD;
+        }
+    }
+}