Revert "finish readme"

This reverts commit c6c9889fd449415d1cba8178c8d2fc6beeffc55b.
Revert "Revert "finish readme""

This reverts commit 2b05bd7d2d0796e4905f7fedfae564e21f0d6c5d.
Revert "Revert "Revert "finish readme"""

This reverts commit 877a1e50f861e6c4bd8f97b2402309e33575718f.
Revert "Revert "Revert "Revert "finish readme""""

This reverts commit 8334a737c60b079ef9095489858c1fc33053dacc.