#1555 Add RegisterEvent and AuthMeAsyncPreRegisterEvent (#1559)

* #1555 Add RegisterEvent and AuthMeAsyncPreRegisterEvent

* Add missing javadoc

src/main/java/fr/xephi/authme/events/RegisterEvent.java

@@ -0,0 +1,47 @@
+package fr.xephi.authme.events;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+/**
+ * Event fired when a player has successfully registered.
+ */
+public class RegisterEvent extends CustomEvent {
+
+    private static final HandlerList handlers = new HandlerList();
+    private final Player player;
+
+    /**
+     * Constructor.
+     *
+     * @param player The player
+     */
+    public RegisterEvent(Player player) {
+        this.player = player;
+    }
+
+    /**
+     * Return the player that has successfully logged in or registered.
+     *
+     * @return The player
+     */
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Return the list of handlers, equivalent to {@link #getHandlers()} and required by {@link Event}.
+     *
+     * @return The list of handlers
+     */
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+}