Fixing Travis script to match other projects
Protocol signature should be 1 not 0
Problem: zyre_peer_connect () asserting in some cases

Due to, I think, an invalid endpoint creeping in. I've no strategy
for dealing with that yet, so have added a log to show what the bad
endpoint is. Once we know that we can decide how to deal with it.
Merge pull request #226 from hintjens/master

Show more information on zyre_peer_connect failure