Added Bresenham line in Go
Updated tags file of Bresenham's line
Added Factorial in Go
Added Insertion sort in Go
Added tests for insertion sort in Go
fixed typo
Added Quicksort in Go
Added tests for quicksort in go
Merge pull request #163 from jcla1/various

Added Bresenham's line, Factorial, Insertion sort (with tests), Quicksort (with tests) in Go