Make team join message clickable

[rickr]

When a new member joins Operation Code a message is sent to the community channel.

This message can be seen here

By using slacks message formatting we should be able to make this username clickable. Documentation can be found here

[Cooperbuilt]

I think all we need to do is change the team_join.rb file to the following

def notify_community!
      im = Operationcode::Slack::Im.new(
        channel: Event::COMMUNITY_CHANNEL,
        text: ":tada: <@#{@user['id']}> has joined the Slack team :tada:"
        )
      im.make_interactive_with!(
        Operationcode::Slack::Im::Interactive.new(
          text: 'Have they been greeted via direct message?',
          id: 'greeted',
          actions: [
            {name: 'yes', text: 'Yes', value: 'yes'}
          ]
        )
      )
      im.deliver
    

I can't make pull requests on this repo so I will comment it. CAVEAT - not sure if this works

[rickr]

Fixed in #60