Increased 'sleep' duration to fix org spec

 1. Ran "rake" and had 1 failed test so ran separate spec:
    * rspec ./spec/requests/organisations_spec.rb:13
    * and got: 
      * Failure/Error: visit organisation_path(organisation)
      * ActiveRecord::RecordNotFound:
      * ActiveRecord::RecordNotFound
 2. Pushed it to Github and checked Travis-ci:
   * FAILED: https://travis-ci.org/jasnow/24pullrequests/builds/39044347
 3. So I changed "sleep" from 1 to 6 seconds on my machine. (minimum change)
 4. Repeated step 1 and it passed so repeated step 2.
    * PASSED: https://travis-ci.org/jasnow/24pullrequests/builds/39045047