Revert "Revert ":confetti_ball: Added .gitattributes & .gitignore files""

This reverts commit b26277d714cb18ff71b9d38141b85b987eb7f26a.
cacheSolve
Revert "cacheSolve"

This reverts commit 227444f29467d04010724a6660a7cb9896e200c7.
makeCacheMatrix