Update heroku.md
Update heroku.md

Add required db migration and config setup

Update heroku.md

Added headers and server restart.

Parkjeahwan/awegeeks,zealord/gatewayd,whotooktwarden/gatewayd,xdv/gatewayd,zealord/gatewayd,Parkjeahwan/awegeeks,whotooktwarden/gatewayd,xdv/gatewayd,crazyquark/gatewayd,crazyquark/gatewayd