title: “heroku run rails db: migrate” (LoadError)
body: <p>I am in the last steps of the Railsbridge Installfest process and everything has gone smoothly until I reach the Deploy (push) to Heroku and type "heroku run rails db: migrate" this is supposed to be the expected message:</p>
  
  <pre class="lang-none prettyprint-override"><code>Migrating to CreateDrinks (20160706063236)
  ==  20160706063236 CreateDrinks: migrating =====================================
  -- create_table(:drinks)
     -&gt; 0.0084s
  ==  20160706063236 CreateDrinks: migrated (0.0085s) ============================
  
  And this is the message I get instead:
  
  
   Running rails db:migrate on ⬢ immense-coast-99385... up, run.5688 (Free)
  /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require': cannot load such file -- bundler (LoadError) from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:inrequire'
  from /app/bin/spring:8:in &lt;top (required)&gt;' from /app/bin/rails:3:inload'
  from /app/bin/rails:3:in `'
  </code></pre>
  
  <p>Also, when I type </p>
  
  <blockquote>
    <p>Heroku open</p>
  </blockquote>
  
  <p>the app won't start.</p>