Add function documentation to bucketSort

Sorts/BucketSort.js

@@ -11,6 +11,14 @@ Time Complexity of Solution:
 Best Case O(n); Average Case O(n); Worst Case O(n)
 
 */
+
+/**
+ * bucketSort returns an array of numbers sorted in increasing order.
+ *
+ * @param {number[]} list The array of numbers to be sorted.
+ * @param {number} size The size of the buckets used. If not provided, size will be 5.
+ * @return {number[]} An array of numbers sorted in increasing order.
+*/
 function bucketSort (list, size) {
   if (undefined === size) {
     size = 5