Use scripts-to-rule-them-all format

.ruby-version

@@ -0,0 +1 @@
+2.4.1

.travis.yml

@@ -1,8 +1,6 @@
+language: ruby
+cache: bundler
 sudo: false
-install:
-  - bundle install
-notifications:
-  email: false
-script: rake
-cache:
-  bundler: true
+bundler_args: --jobs=3 --retry=3
+before_install: ./script/setup
+script: ./script/cibuild

Brewfile

@@ -0,0 +1,6 @@
+tap "github/bootstrap"
+
+brew "rbenv"
+brew "ruby-build"
+
+brew "imagemagick"

README.md

@@ -7,6 +7,5 @@ There are some lint tests in place to ensure each topic is formatted in the way
 run the tests using:
 
 ```bash
-bundle install
-rake
+./script/cibuild
 ```

script/cibuild

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$0")/.."
+
+./script/setup
+
+set +e
+
+bundle exec rake test
+RAKE_EXIT="$?"
+bundle exec rubocop --display-cop-names
+RUBOCOP_EXIT="$?"
+[[ "$RAKE_EXIT" == 0 && "$RUBOCOP_EXIT" == 0 ]]

script/setup

@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+cd "$(dirname "$0")/.."
+
+if [ "$(uname -s)" = "Darwin" ]; then
+  brew bundle check &>/dev/null  || brew bundle
+  rbenv version-name &>/dev/null || brew bootstrap-rbenv-ruby
+fi
+
+bundle check &>/dev/null || bundle install