Given a string, return true if the input string is a permutation of palindrome or false if it is not. Permutation means that all letters of the string can be used to create a palindrome.
Palindromes are strings that form the same word if it is reversed.
permutationPalindrome("gikig") == true
permutationPalindrome("ookvk") == true
permutationPalindrome("sows") == false
permutationPalindrome("tami") == false