Use ChromeDriver, because phantomjs doesn't work.

No idea why, I'm quite sure phantomjs used to work,
but it doesn't at the moment :(

possibly: ariya/phantomjs#14211

bin/test

@@ -1,6 +1,6 @@
 #!/bin/bash
 set -e
-phantomjs --wd > /dev/null &
+chromedriver > /dev/null &
 pid=$!
 trap "kill $pid" INT TERM EXIT
 mix test --include feature --include production_api_test

config/test.exs

@@ -17,4 +17,5 @@ config :caster, Caster.Repo,
   pool: Ecto.Adapters.SQL.Sandbox,
   ownership_timeout: 30_000
 
-  config :hound, driver: "phantomjs"
+  # config :hound, driver: "phantomjs"
+config :hound, driver: "chrome_driver"

test/features/cast_feature_test.exs

@@ -11,6 +11,7 @@ defmodule Caster.Features.CastTest do
     Repo.insert!(%VimCast{title: "happy", url: "a"})
     navigate_to("/casts?source=vimcast")
     element_text = find_element(:css, "h1") |> visible_text
+
     assert Regex.match?(~r/Vimcasts/, element_text)
     assert Regex.match?(~r/happy/, visible_page_text())
   end