Merge pull request #17 from adowns01/testing

added tests for quicksort
updated for release of 0.1.0

noted bug found in 0.0.1 and added quicksort and mergesort to the list of available sorting algorithms.
Edited for typos
added the heap sort algorithm
added heapsort to the list of sorting algorithms for the compare_all
Merge pull request #18 from adowns01/heap-sort

added heapsort algorithm
added tests for heapsort algorithm