title: Ruby on Rails bundler: command not found: spring unable to proceed
body: <pre><code>run  bundle install --local
  </code></pre>
  
  <p>Could not find <code>gem 'rails (= 4.2.6)'</code> in any of the gem sources listed in your
  Gemfile.</p>
  
  <pre><code>run  bundle exec spring binstub --all
  </code></pre>
  
  <blockquote>
    <p>bundler: command not found: spring Install missing gem executables
    with <code>bundle install</code></p>
  </blockquote>
  
  <p>Please help me solve this issue.</p>