!161 修复导入数据为负浮点数时，导入结果会丢失精度问题

Merge pull request !161 from 嘿白熊/master

@@ -1059,7 +1059,7 @@ public class ExcelUtil<T>
                     }
                     else
                     {
-                        if ((Double) val % 1 > 0)
+                        if ((Double) val % 1 != 0)
                         {
                             val = new BigDecimal(val.toString());
                         }