fix #2: Add common PGN tags in "specialMetadata" array.

CHESS_JSON.php

@@ -15,13 +15,13 @@ class CHESS_JSON {
     const MOVE_CAPTURE = 'capture';
     const MOVE_PROMOTE_TO = 'promoteTo';
     const MOVE_CASTLE = 'castle';
-    const MOVE_PARSED = 'castle';
+    const MOVE_PARSED = 'parsed';
 
     const GAME_METADATA = 'metadata';
     const GAME_EVENT = 'event';
     const GAME_WHITE = 'white';
     const GAME_BLACK = 'black';
-    const GAME_ECO = 'black';
+    const GAME_ECO = 'eco';
 
     const PGN_KEY_ACTION_ARROW = "ar";
     const PGN_KEY_ACTION_HIGHLIGHT = "sq";

GameParser.php

@@ -75,4 +75,4 @@ class GameParser
     {
         return $this->game[CHESS_JSON::FEN];
     }
-}
+}

PgnGameParser.php

@@ -10,7 +10,9 @@ class PgnGameParser{
 
     private $specialMetadata = array(
         'event','site','white','black','result','plycount','eco','fen',
-        'timecontrol','round','date','annotator','termination'
+        'timecontrol','round','date','annotator','termination',
+        'whiteelo', 'blackelo', 'whiteteam', 'blackteam',
+        'opening', 'eventdate', 'seat'
     );
 
     public function __construct($pgnGame = null){