Create server.log properly on non-existent directories

src/pocketmine/PocketMine.php

@@ -126,6 +126,9 @@ namespace pocketmine {
 
 	define("pocketmine\\ANSI", (Utils::getOS() !== "win" or isset($opts["enable-ansi"])) and !isset($opts["disable-ansi"]));
 
+
+	@mkdir(\pocketmine\DATA, 0777, true);
+
 	//Logger has a dependency on timezone, so we'll set it to UTC until we can get the actual timezone.
 	date_default_timezone_set("UTC");
 	$logger = new MainLogger(\pocketmine\DATA . "server.log", \pocketmine\ANSI);