Add: seperate ads page from start page and apply Google Analytics code

src/game/ads/main.js

@@ -0,0 +1,13 @@
+/////////////////////////////
+// Main game
+
+var CONTENT_ID = "Ads";
+
+var game = new Phaser.Game(
+	GAME_SCREEN_SIZE.x, GAME_SCREEN_SIZE.y,
+	Phaser.CANVAS, CONTENT_ID
+);
+
+
+game.state.add('Ads', Ads);
+game.state.start('Ads');