Revert "add cname file"

This reverts commit 2891b4ffae6dca801ff94d6685a8b1d414ec45fd.
Revert "Merge branch 'master' of github.com:baotong/baotong.github.com into source"

This reverts commit 88943864b443a26dc081718e679b395abe4dc123, reversing
changes made to 34c73fce83e67400c375f4021a4a3429f0a7904d.