Merge pull request #8 from rullzer/fix/read_bytes_is_not_requested_bytes

Fix read in callbackwrapper

src/CallbackWrapper.php

@@ -90,7 +90,7 @@ public function stream_open($path, $mode, $options, &$opened_path) {
 	public function stream_read($count) {
 		$result = parent::stream_read($count);
 		if (is_callable($this->readCallback)) {
-			call_user_func($this->readCallback, $count);
+			call_user_func($this->readCallback, $result);
 		}
 		return $result;
 	}