Add request info bot

[GeorgianaElena]

Closes #2

When no description is provided for a issue/PR, the bot will label the issue with needs-more-info and post this message:

I couldn't link a PR template because we don't have an organization specific one yet.
Also, the bot doesn't provide any placeholder we can use to get the username of the person opening the issue/pr or the name of the repo.

[choldgraf]

LGTM - one small change

[betatim]

Can we make the voice of the bot more prescriptive? Not "we'd appreciate" but "In order for us to be able to review your contribution please describe it in more detail. The most important question to answer in your description is: what goal do you want to achieve with this change?"

Being polite but also making it clear that it is rude to open a PR without description and that we won't move until there is one. Also giving users a hint as to what we expect them to do for the cases where they aren't sure what to write.

[GeorgianaElena]

Being polite but also making it clear that it is rude to open a PR without description and that we won't move until there is one. Also giving users a hint as to what we expect them to do for the cases where they aren't sure what to write.

Agree!

How does this new message sound?

[choldgraf]

you are both better at being assertive than my midwestern self 😆 I like the new language!

[betatim]

Says the pushy American to the polite Englishman who now lives in subtle Switzerland ;)

I like it. merge time?

[consideRatio]

LGTM! =) Thanks for working on this, it will be a good improvement to the community experience as a whole I think.

[GeorgianaElena]

Should I then send a request to enable the bot in all the repos in the org and not just a few (like we did for the other bot)?

[GeorgianaElena]

Done. I think I sent requests for all the repos (it wasn't any confirmation page, so I'm not entirely sure it went through).

[choldgraf]

I think it went through - I "accepted" a reviewbot request for the jupyterhub repos...can we test this?