title: Rails startup Issues in Ubuntu
body: <p>I've used rvm to install rails..no problems.</p>
  
  <p>Created a new app successfully</p>
  
  <p>Running bundle install without issues.</p>
  
  <p>Although, trying to run any command further (rails s, rails g controller.., etc)</p>
  
  <p>I'm getting this error</p>
  
  <pre><code>    /home/USER/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.9/lib/execjs              /runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
  </code></pre>
  
  <p>I'm assuming there's an issue with a gem but I'm really clueless on what happened and can't seem to find anything that addresses this issue</p>