title: RubyMine: Could not find rake-10.5.0 in any of the sources
body: <p>I am new to Ruby on Rails and I am using RubyMine 8. After I created a new project I tried to look at the rails version by typing <code>$ rails -v</code>, then I got <code>Could not find rake-10.5.0 in any of the sources
  Run 'bundle install' to install missing gems.</code> I tried to install rake by typing <code>$ gem install rake</code> but I still get this error. Can someone help me? Here are two screenshots: <a href="http://i.stack.imgur.com/BOvNm.png" rel="nofollow">Cannot find rake error</a>  and  <a href="http://i.stack.imgur.com/AgjG6.png" rel="nofollow">Warnings</a>.</p>
  
  <p>I tried bundle install and bundle update by going into Tools-->Bundler-->Install(and Update), and I've checked rake version by typing <code>rake --version</code>(gives me 10.5.0) but neither of them works. Thank you!!</p>