add test method

TZImagePickerController/ViewController.m

@@ -217,6 +217,7 @@
     // imagePickerVc.navigationBar.barTintColor = [UIColor greenColor];
     // imagePickerVc.oKButtonTitleColorDisabled = [UIColor lightGrayColor];
     // imagePickerVc.oKButtonTitleColorNormal = [UIColor greenColor];
+    // imagePickerVc.navigationBar.translucent = NO;
     
     // 3. Set allow picking video & photo & originalPhoto or not
     // 3. 设置是否可以选择视频/图片/原图