Revert "Delete note.txt"

This reverts commit bd1f9af119f7e717293a5e677081c5da97084605.
Revert "Revert "Delete note.txt""

This reverts commit 7373a6f633444475d94fd8d9a25fddcfaf3abe2b.
Revert "Revert "Revert "Delete note.txt"""

This reverts commit bce937fe18afe77ad4d10e4c84d78b32158b07f4.
Rename note.txt to README.md