Add contributor entry for Payflow NV implementation
Add contributor entry for Payflow NV implementation

git-svn-id: 89097a394f460cc6812eec7e5bafeda513016c99@656 6513ea26-6c20-0410-8a68-89cd7235086d

openminds/activemerchant-ogone,SachaSchlegel/active_merchant,stympy/active_merchant,gregfu/active_merchant