title: Noindex, nofollow - is placing them in HTTP response enough?
body: <p>I think that question's title says it all - while developing and deploying betas, should I put </p>
  
  <pre><code>X-Robots-Tag: noindex, nofollow
  </code></pre>
  
  <p>in HTTP response, or</p>
  
  <pre><code>&lt;meta name="robots" content="noindex, nofollow"&gt;
  </code></pre>
  
  <p>in <code>&lt;head&gt;&lt;/head&gt;</code> section of every page?</p>