add description for scramblies

Author: betomoedano

strings/scramble.js

@@ -1,3 +1,9 @@
+// Complete the function scramble(str1, str2) that returns true if a portion of str1 characters can be rearranged to match str2, otherwise returns false.
+
+// Notes:
+
+// Only lower case letters will be used (a-z). No punctuation or digits will be included.
+// Performance needs to be considered.
 // O(n) time - where n is the total of chars in str1
 // O(1) space - because at maximum we will have 26 letters in our dictionary
 function scramble(str1, str2) {