Add project status information to Wiki home page

[eebbesen]

https://github.com/OpenTwinCities/mnpay/wiki should mention that the app isn't currently operational, why this is, and what folks can do to revive it (data gathering).

[abkosar]

Hey! I would like to give this a shot!

[eebbesen]

Awesome! Let me know if you have questions/issues. I encourage you to join the OTC Slack group (https://otc-slackin.herokuapp.com/) and reach out to @kjschiroo for exact details.

Let me know if you have any issues (I'm also in that Slack group).