maint: Mention upstream NBD in README
commit1d5764874a1c8e1d27e813bb67bb422d6c8b8152
authorEric Blake <eblake@redhat.com>
Tue, 21 Nov 2017 21:04:20 +0000 (21 15:04 -0600)
committerRichard W.M. Jones <rjones@redhat.com>
Tue, 21 Nov 2017 21:12:32 +0000 (21 21:12 +0000)
tree101d1a3dd633711df249a3a5560e45646eb70dd4
parent4d611729d967e5b49f17bd5a0092d80083047e9e
maint: Mention upstream NBD in README

It's worth having a link to the upstream NBD protocol as part
of README.

Fix a typo while at it.

Signed-off-by: Eric Blake <eblake@redhat.com>
README