title: Execute slash command as slack bot
body: <p>I'm writing a simple slack bot which should execute other slack commands upon being called. Everything is up and running, however the slack commands this bot issues don't seem to be executed.</p>
  
  <p>For instance my bot posts <code>/giphy kitten</code> every hour and the message appears just like that in the channel (so the sending side seems to work), but the slash command itself isn't executed. If I post the same command into the same channel myself it works as expected. Are bots not allowed to execute slash commands?</p>