Revert "Removes README.rdoc"

This reverts commit d33070d77ce8556324d8bb5a805a54ee4d077020.
Revert "Changes readme."

This reverts commit e7bf2567ec0bdc6159e93b12ec9aa03c21329017.
Revert "went back one commit"

This reverts commit c8c16c393321eff6956692c9fa1d9ea467751a14.