title: Meteor oplog for Mongo 2.6
body: <p>When I run lines from <a href="https://github.com/meteor/meteor/wiki/Oplog-Observe-Driver" rel="nofollow">https://github.com/meteor/meteor/wiki/Oplog-Observe-Driver</a> I get  </p>
  
  <pre><code>WARNING: The 'addUser' shell helper is DEPRECATED. Please use 'createUser' instead
  2014-09-05T20:51:35.483-0400 Error: couldn't add user: "otherDBRoles" is not a valid argument to createUser at src/mongo/shell/db.js:1004
  </code></pre>
  
  <p>Because it was created for Mongo 2.4. Have someone managed to make it work on Mongo 2.6.1? 
  If not, do I need to downgrade to 2.4? And if yes, how can I do it easily?</p>