added tests and removed logger from package

tests/Webservice/Formatter/JsonTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace BSR\Webservice\Formatter;
+
+class Json extends Formatter {
+    protected static function init() {
+        self::registerFormats(array(
+            'application/json',
+            'application/x-json',
+        ));
+    }
+
+    public function render($data) {
+        echo json_encode($data);
+    }
+}
+