chrome driver upgrade

chromedriver_upgrader.rb

chrome_string = %x(google-chrome --version)
chrome_string =~ /([\.\d]+)/
version = $1

local_chromedriver = %x(chromedriver --version) rescue ''
local_chromedriver =~ /([\.\d]+)/
local_chromedriver_version = $1

if version != local_chromedriver_version
  url = "https://chromedriver.storage.googleapis.com/#{version}/chromedriver_linux64.zip"
  puts "upgrading chrome driver with: #{url}"

  system("curl #{url} > chromedriver_linux64_#{version}.zip")
  system("unzip chromedriver_linux64_#{version}.zip -d chromedriver_#{version}")
  system("cp chromedriver_#{version}/chromedriver $HOME/bin/")
else
  puts "version match, no need to upgrade"
end