rename distinctValuesOfArray into uniqueElements

snippets/uniqueElements.md

@@ -0,0 +1,13 @@
+### uniqueElements
+
+Returns all unique values of an array.
+
+Use ES6 `Set` and the `...rest` operator to discard all duplicated values.
+
+```js
+const uniqueElements = arr => [...new Set(arr)];
+```
+
+```js
+uniqueElements([1, 2, 2, 3, 4, 4, 5]); // [1,2,3,4,5]
+```