ChromeOptions_ChromeExtension.rb

require 'rubygems'
require 'selenium-webdriver'

caps = Selenium::WebDriver::Remote::Capabilities.chrome(
	
	"browserstack.user" => "<BROWSERSTACK_USERNAME>",
	"browserstack.key" => "<BROWSERSTACK_ACCESS_KEY>",

	"browser" => "chrome",
	"os" => "Windows",
	"os_version" => "10",

	"project" => "Test Run",
	"build" => "Support Automate",
	"name" => "Test : Chrome Extn [Ruby]",
	"browserstack.debug" => "true",

	"chromeOptions" => {"args" => [ "--disable-web-security" ], 'extensions' => [
        Base64.strict_encode64(File.open('/Users/test1/Page Ruler.crx', 'rb').read)
      ]}
	)

driver = Selenium::WebDriver.for(:remote,
 :url => "http://hub-cloud.browserstack.com/wd/hub",
 :desired_capabilities => caps)

driver.navigate.to "http://www.google.com"
element = driver.find_element(:name, 'q')
element.send_keys "BrowserStack"
element.submit
puts driver.title
driver.quit