title: How to give role to user for reaction
body: <p>If user add reaction <code>:HotS_Tank:</code> in a special message, the bot will need to give this role to user, but I do not have any idea how to do it...</p>
  
  <p>That's what I have tried:</p>
  
  <pre><code>async def role_background_task():
      await client.wait_until_ready()
      roleChannel = discord.Object(id='411270826374070293')
      roleMSG1 = client.get_message(roleChannel, id='411657109860515840')
      roleMSG2 = client.get_message(roleChannel, id='411657144488689674')
          while not client.is_closed:
              reac1 = await client.wait_for_reaction(emoji=':HotS_Tank:411445724287598592',message=roleMSG1)
      if reac1.reaction.emoji == ':HotS_Tank:411445724287598592':
          await client.add_roles(reac1.user, roleHOTS_Tank)
  client.loop.create_task(role_background_task())
  </code></pre>