title: The asset "application.js" is not present in the asset pipeline
body: <p>I'm new in <strong>Ruby</strong> and in <strong>ROR</strong> framework. I try to create web app with JQuery. My steps are:</p>
  
  <ol>
  <li>Added gem 'jquery-rails' and executed <strong>bundle install</strong> command from command line</li>
  <li>String <strong><code>//= require jquery2</code></strong> added into <strong>application.js</strong> file</li>
  <li>Now I try include file into page. And I added in  section string <strong><code>&lt;%= javascript_include_tag "application" %&gt;</code></strong> into <strong>application.html.erb</strong> file</li>
  </ol>
  
  <p>when I try to see page in browser I see error with message:</p>
  
  <pre><code>Sprockets::Rails::Helper::AssetNotFound in LandingPage#index
  The asset "application.js" is not present in the asset pipeline.
  &lt;%= javascript_include_tag "application" %&gt;
  </code></pre>
  
  <p>What I doing wrong? I googled about this error, but I didn't found anything good explained.</p>