Update /velocity version so implementation stuff can be changed.

proxy/build.gradle

@@ -18,7 +18,9 @@ jar {
         def version = "${project.version} (git-${project.ext.getCurrentShortRevision()}-b${buildNumber})"
 
         attributes 'Main-Class': 'com.velocitypowered.proxy.Velocity'
+        attributes 'Implementation-Title': "Velocity"
         attributes 'Implementation-Version': version
+        attributes 'Implementation-Vendor': "Velocity Contributors"
     }
 }
 

proxy/src/main/java/com/velocitypowered/proxy/command/VelocityCommand.java

@@ -1,5 +1,6 @@
 package com.velocitypowered.proxy.command;
 
+import com.google.common.base.MoreObjects;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.velocitypowered.api.command.Command;
@@ -80,14 +81,20 @@ public class VelocityCommand implements Command {
 
         @Override
         public void execute(@NonNull CommandSource source, @NonNull String[] args) {
-            String implVersion = VelocityServer.class.getPackage().getImplementationVersion();
-            TextComponent velocity = TextComponent.builder("Velocity ")
+            String implName = MoreObjects.firstNonNull(VelocityServer.class.getPackage().getImplementationTitle(), "Velocity");
+            String implVersion = MoreObjects.firstNonNull(VelocityServer.class.getPackage().getImplementationVersion(), "<unknown>");
+            String implVendor = MoreObjects.firstNonNull(VelocityServer.class.getPackage().getImplementationVendor(), "Velocity Contributors");
+            TextComponent velocity = TextComponent.builder(implName + " ")
                     .decoration(TextDecoration.BOLD, true)
                     .color(TextColor.DARK_AQUA)
                     .append(TextComponent.of(implVersion == null ? "<unknown>" : implVersion).decoration(TextDecoration.BOLD, false))
                     .build();
-            TextComponent copyright = TextComponent.of("Copyright 2018 Velocity Contributors. Velocity is freely licensed under the terms of the " +
+            TextComponent copyright = TextComponent.of("Copyright 2018 " + implVendor + ". " + implName + " is freely licensed under the terms of the " +
                     "MIT License.");
+            source.sendMessage(velocity);
+            source.sendMessage(copyright);
+
+            if (implName.equals("Velocity")) {
                 TextComponent velocityWebsite = TextComponent.builder()
                         .content("Visit the ")
                         .append(TextComponent.builder("Velocity website")
@@ -100,11 +107,9 @@ public class VelocityCommand implements Command {
                                 .clickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, "https://github.com/VelocityPowered/Velocity"))
                                 .build())
                         .build();
-
-            source.sendMessage(velocity);
-            source.sendMessage(copyright);
                 source.sendMessage(velocityWebsite);
             }
+        }
 
         @Override
         public boolean hasPermission(@NonNull CommandSource source, @NonNull String[] args) {