Update urls of endpoints/resources to match with windcave#60

Merged

barryvdh merged 3 commits intothephpleague:masterfrom notf0und:Rebrand

May 26, 2020

+32-32

Commits on May 20, 2020

Update urls of endpoints/resources to match with windcave
notf0und
committed
Update comments strings from PaymentExpress to Windcave
notf0und
committed
Update tests that references paymentexpress urls to use new windcave ones
notf0und
committed