title: Changing nickname of bot with a command
body: <p>I would like to make changes to my bot's name with a command like <code>!Changenick nick</code> - by 'nick' I mean the new bot's name. Could you guys help me? I just want bot to change username when someone writes <code>!Changenick</code> for example:</p>
  
  <p><code>!changenick Freshname</code></p>
  
  <p><em>bot changes his own name to Freshname</em></p>