Added assignment code

added code that would allow for the cache of a matrix and the ability
to take that matrix and return its inverse
Revert "Added assignment code"

This reverts commit ecb503e6e94eaf38e1a78a5dcd191ac9be80580d.
Revert ecb503e..b30775b

This rolls back to commit ecb503e6e94eaf38e1a78a5dcd191ac9be80580d.