[LCA2015-Chat] Postgres Replication Tutorial Preparation

[Josh Berkus]

All:

If you are planning to attend the PostgreSQL Replication Tutorial
session I am giving at LCA, you will need to to do advance prep in order
to participate in the hands-on exercises.  Otherwise you'll end up just
spectating.  Please see here:

https://linux.conf.au/wiki/pgReplicationTutorial

... for requirements and installation instructions.  Note that this is
the first time offering the tutorial on Docker as well as Vagrant, so
please file issues with the GitHub project if you find any.

--Josh Berkus