Revert "README file"

This reverts commit 8f5c4b7951cb4da0ada543bed1460f38ff9ce604.
Revert "Revert "README file""

This reverts commit 9361628efa5b668145cd4f9f64eaedd29f6a9b1b.
Revert "fixed curly quotes in README file"

This reverts commit 4a66300bcc77738334b578377eb458a99265fd24.
renamed readme to README.md