Initial commit

Most of code committed.  Need to update comments and run unit tests
Mainly a test to understand commits

Also added some comments
Cleaned up formatting  for various lines in the makeCacheMatrix function

Added additional formatting and comments
Major Cleanup

New to Git, so the programming was taking place in a file separate from
the Git version.  Copied all code to the Git version and now can
directly edit it with RStudio.
Added comment lines and finished unit testing