Write two functions:
1. makeSentence(L) Take a list of strings, and join them in one string with spaces BETWEEN the words. do not use the function join(). Assume no spaces in the strings.
makeSentence(["coding","you","must","do"]) returns: 'coding you must do' (no space at end)
makeSentence( ) returns '' (empty string)
2. makeFibList(n) takes a non-negative integer n, and returns a list of the first Fibonacci numbers up to the n'th number counting 0 as the 0th number. (do NOT use a separate fib function for this.)
makeFibList(0) returns 
makeFibList(5) returns [ 0, 1, 1, 2, 3, 5]