Revert "Initial commit for Programming Assignment 2"

This reverts commit 27987823fcf81d46a5e2186391addd87c079b879.

Conflicts:
	README.md
	cachematrix.R
Revert "Revert "Initial commit for Programming Assignment 2""

This reverts commit 7b7d3dcee8655f3db703232c3f4805112b3d56e7.