Adding redirectUri parameter to start bot command

[josephkerkhof]

This node command fails without the redirectUri parameter being included.

[jonchurch]

This was a mistake I introduced, because you don't actually need the redirectUri for the slack_button flow, it should not be necessary to run the file.

[josephkerkhof]

When I tried running the starting command as instructed, it gave me an error saying that it needed the redirectUri parameter. The code that I updated was the only way for me to get the bot to launch.

[jonchurch]

You are spot on that this is a bug, but the right fix is to make redirectUri optional and not required to run the file.

[josephkerkhof]

Gotcha. That would just mean removing it from the first if-statement, correct?

[jonchurch]

Correct, I submitted #526 to address this.