title: bundler-audit for insecure source
body: <p>I want to use <a href="https://github.com/rubysec/bundler-audit" rel="nofollow">bundler-audit</a> for auditing my Gemfile.lock but I have my own gems repository. When I run </p>
  
  <pre><code>bundler-audit
  </code></pre>
  
  <p>It always give me this error or notification:</p>
  
  <pre><code>Insecure Source URI found: http://gems.repository.cu/
  Unpatched versions found!
  </code></pre>
  
  <p>Then, how do I tell to bundler-audit that I want to check from an insecure source ? </p>
  
  <p>Is it possible?</p>