[jabley] check out wrk2 homebrew tap
[jabley] check out wrk2 homebrew tap

I reinstalled this and it had a warning.

> Warning: Calling ENV.j1 is deprecated!
> Use ENV.deparallelize instead.
> /opt/boxen/homebrew/Library/Taps/jabley/homebrew-wrk2/wrk2.rb:10:in `install'
> Please report this to the jabley/wrk2 tap!

I should fix that.

jabley/our-boxen,jabley/our-boxen,jabley/our-boxen