Revert "Update README.md"

This reverts commit c6bce02c297eedc92fc378a513c6dc47bcd96ee0.
uptadet to latest web2py (2.9.10)
Revert "uptadet to latest web2py (2.9.10)"

This reverts commit 8265ebd4a94640fad474fdff6cf9082af3322128.
updating to latest web2py (2.9.11)