set up heroku servers & DNS

[harlantwood]

react client:

• demo1.worknation.io -> client-worknation-demo1
• demo2.worknation.io -> client-worknation-demo2
• app-staging.worknation.io -> client-worknation-staging

rails server:

• api1.worknation.io -> worknation-demo1
• api2.worknation.io -> worknation-demo2
• api-staging.worknation.io -> worknation-staging