Setup

macOS

Install Xcode Command Line Tools

xcode-select --install
accept license agreement: sudo xcodebuild -license

Install Homebrew

ruby -e "$(curl -fsSl https://raw.githubusercontent.com/Homebrew/install/master/install)"

Install RVM

\curl -sSL https://get.rvm.io | sudo bash -s stable --autolibs=homebrew 

source /etc/profile.d/rvm.sh

rvm group add rvm $USER

Install Ruby

rvm install 2.5.1

If you have trouble with brew and openssl, you may have to force a new install

brew install openssl --force

if this fails or has error, you may need to correct permissions in /usr/local

On macOS Sierra (10.12) or earlier
    sudo chown -R $USER:admin /usr/local
On macOS High Sierra (10.13)
    sudo chown -R $(whoami) $(brew --prefix)/*

Install Bundler

gem install bundler

Install the Gems

bundle install

Install Chromedriver

brew install chromedriver