Meteor: Can't add package useraccounts:bootstrap - npm.depends error
<p>When I try to add useraccounts:bootstrap to my meteor project, I receive the following error...</p>

<pre><code>Error: Can't find npm module 'request'. Did you forget to call 'Npm.depends' in package.js within the 'http' package?
</code></pre>

<p>What can I do to fix this?</p>