The mysql client init process is broken since they changed the mysql npm package too drastically. Throws a deprecated warning. It's quite easy to fix for someone using your library but it's of annoying.
That's why I applied that simple patch for you in case you want update node-migrate.
Anyway, keep up the good work.
edited mysql client creation so that it works with mysql >= 0.9.5
Merge pull request #10 from philippkueng/master
updated client creation process to work with newer versions of the mysql npm package