Added weather to json world output (hasStorm and isThundering)

src/main/java/org/dynmap/Client.java

@@ -6,6 +6,8 @@ public class Client {
     public static class Update {
         public long timestamp;
         public long servertime;
+        public boolean hasStorm;
+        public boolean isThundering;
         public Player[] players;
         public Object[] updates;
     }

src/main/java/org/dynmap/JsonTimerTask.java

@@ -96,6 +96,8 @@ class JsonTimerTask extends TimerTask {
 
             update.timestamp = current;
             update.servertime = world.getTime() % 24000;
+            update.hasStorm = world.hasStorm();
+            update.isThundering = world.isThundering();
 
             Player[] players = plugin.playerList.getVisiblePlayers();
             update.players = new Client.Player[players.length];

src/main/java/org/dynmap/web/handlers/ClientUpdateHandler.java

@@ -64,6 +64,8 @@ public class ClientUpdateHandler implements HttpHandler {
         Client.Update update = new Client.Update();
         update.timestamp = current;
         update.servertime = world.getTime() % 24000;
+        update.hasStorm = world.hasStorm();
+        update.isThundering = world.isThundering();
         
         
         Player[] players = playerList.getVisiblePlayers();