update func GetElapsedTime and None comment

README.md

@@ -281,7 +281,7 @@ func Schedule(d time.Duration, fn interface{}, args ...interface{}) chan bool //
 func (w *Watcher) Start() //start the watch timer.
 func (w *Watcher) Stop() //stop the watch timer
 func (w *Watcher) Reset() {} //reset the watch timer.
-func (w *Watcher) GetElapsedTime() time.Duration //获取代码段运行时间
+func (w *Watcher) GetElapsedTime() time.Duration //return time duration from watcher start to end.
 ```
 
 #### 7. netutil is for net process

README_zh-CN.md

@@ -395,7 +395,7 @@ func Difference(slice1, slice2 interface{}) interface{} //返回
 func DeleteByIndex(slice interface{}, start int, end ...int) (interface{}, error) //删除切片中start到end位置的值
 func Drop(slice interface{}, n int) interface{} //创建一个新切片，当n大于0时删除原切片前n个元素，当n小于0时删除原切片后n个元素
 func Every(slice, function interface{}) bool //slice中所有元素都符合函数条件时返回true, 否则返回false. 函数签名：func(index int, value interface{}) bool
-func None(slice, function interface{}) bool
+func None(slice, function interface{}) bool //slice中所有元素都不符合函数条件时返回true, 否则返回false. 函数签名：func(index int, value interface{}) bool
 func Find(slice, function interface{}) (interface{}, bool)//查找slice中第一个符合条件的元素，函数签名：func(index int, value interface{}) bool
 func Filter(slice, function interface{}) interface{} //过滤slice, 函数签名：func(index int, value interface{}) bool
 func FlattenDeep(slice interface{}) interface{} //将slice递归为一维切片。