Update BinaryProtocol.md with mutation seqno
Update BinaryProtocol.md with mutation seqno

Some of the commands did not contain the information that they
may return mutation sequence information if the client enabled
the feature

Change-Id: I38680db69490981753a381f2ee7ee6c8f8742092
Reviewed-on: http://review.couchbase.org/101890
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine