Postgres

• On Mac, installing Postgres is easiest with Homebrew
• https://www.codefellows.org/blog/three-battle-tested-ways-to-install-postgresql
• http://www.gotealeaf.com/blog/how-to-install-postgresql-on-a-mac
• To have launchd start postgresql at login: ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents
• Then to load postgresql now: launchctl load ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist