doc update

README.md

@@ -36,6 +36,13 @@ newdata := slice.Filter(data, func(v int) {
 })
 ```
 
+Need to convert a slice of values to something different? Not a big deal. Just give a processing function to "slice.Map".
+
+```go
+data := []int{654, 234, 546, 23, 76, 87, 34, 232, 656, 767, 23, 4, 546, 56}
+datastr := slice.Map(data, strconv.Itoa) // You'll get []string{...}
+```
+
 Let's look at another example. Sometimes you run into situations where the structure takes a pointer to a simple type, like string. It's understandable, sometimes we need to take nil as one of the possible states. But if we will try to create a pointer from an inline value, we get an error.
 
 ```go

doc.go

@@ -29,6 +29,12 @@ Let's see what it would look like with our package.
 		return v > 50
 	})
 
+Need to convert a slice of values to something different?
+Not a big deal. Just give a processing function to "slice.Map".
+
+	data := []int{654, 234, 546, 23, 76, 87, 34, 232, 656, 767, 23, 4, 546, 56}
+	datastr := slice.Map(data, strconv.Itoa) // You'll get []string{...}
+
 Let's look at another example.
 Sometimes you run into situations where the structure takes a pointer to a simple type, like string.
 It's understandable, sometimes we need to take nil as one of the possible states.