began writing script for step three, sentence importance calculator
continued writing code for sentence scoring.  i forgot to include creating the UN set of words from the indices matrix, so I will do that in wordExtraction. This will be pushed in the next iteration.  In this push, I have written the for loops for sentence scoring.
wrote out for loop for calculating sentence importance. still need to build the UN matrix and test. not sure if the in method is how to test for a value