title: Can't add ppa on Ubuntu 15.10
body: <p>I just installed the ubuntu 15.10, and was trying to installed some apps. But I can't add any repository-ppa. Every time it says "user or team does not exist. ex.</p>
  
  <pre><code>sudo add-apt-repository ppa:noobslab/nemo
  Cannot add PPA: 'ppa:~noobslab/ubuntu/nemo'.
  ERROR: '~noobslab' user or team does not exist.
  </code></pre>
  
  <p>Please, suggest a fix for this problem.</p>
  
  <p>Edit: I am not talking about that specific ppa, every time for any ppa it says the same thing... </p>
  
  <pre><code>sudo apt-add-repository -y ppa:teejee2008/ppa
  Cannot add PPA: 'ppa:~teejee2008/ubuntu/ppa'.
  ERROR: '~teejee2008' user or team does not exist
  </code></pre>
  
  <p>or</p>
  
  <pre><code>sudo add-apt-repository ppa:noobslab/themes
  Cannot add PPA: 'ppa:~noobslab/ubuntu/themes'.
  ERROR: '~noobslab' user or team does not exist.
  </code></pre>
  
  <p>.</p>