Initial commit
Created humanized_list function

Created function to take in string, explode it into an array, pop the
last array value off and save it to a variable, implode the array, then
return a string that include the new string + and lastItem.
Sorted array to be in alpha order by first name
Created second argument to make sorting optional

If TRUE is passed, sort the items. If FALSE is passed, don’t sort.
Set the sorting default to false

Set sorting default to false so that if no second argument is passed,
no sorting occurs.