build updated readme

README.md

@@ -251,12 +251,12 @@ const distinctValuesOfArray = arr => [...new Set(arr)];
 
 Removes elements in an array until the passed function returns `true`. Returns the remaining elements in the array.
 
-Loop through the array, using `Array.shift()` to drop the first element of the array until the returned value from the function is `true`.
+Loop through the array, using `Array.slice()` to drop the first element of the array until the returned value from the function is `true`.
 Returns the remaining elements.
 
 ```js
 const dropElements = (arr, func) => {
-  while (arr.length > 0 && !func(arr[0])) arr.shift();
+  while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
   return arr;
 };
 // dropElements([1, 2, 3, 4], n => n >= 3) -> [3,4]