title: How do I setup Selenium webdriver on RubyMine?
body: <p>I have to learn how to user Selenium Webdriver in RubyMine
  I have no idea how to install Selenium gem.
  I have downloaded Selenium gem, but what is next? how do I install or bind to my RubyMine IDE?
  I used to work a lot with Java, Ruby and RubyMine is completely new tools for me.
  Thanks in advance</p>