Latest commit 676bb17 Jun 22, 2017 @nishanttotla nishanttotla Adding deprecation message for token based discovery.
Token based discovery, which is the default discovery mechanism, is now
deprecated and may be removed in a future release. It will be replaced
by a new mechanism that is backed by Docker Swarm mode.

Signed-off-by: Nishant Totla <[email protected]>