sync Grade.php to develop branch. code revie by Hongfei

@@ -16,7 +16,6 @@ class GradeModel
      * 获取个人中心-会员等级数据
      */
 
-
     public static function getGrade($channel, $uid) {
         $result = array();
 
@@ -29,7 +28,6 @@ class GradeModel
             }
         }
         
-
         //调用接口获取数据
         $data = GradeData::getGradeData($channel, $uid);
         if (!empty($data['grade'])) {
@@ -49,7 +47,6 @@ class GradeModel
             }
 
             //今年总消费
-
             $result['vipGrade']['costOfThisYear'] = sprintf("%.2f", $data['grade']['current_year_cost']);
             //升级下一等级会员的进度;          
             if($data['grade']['next_need_cost'] == 0){