added file to test ipn manually using curl. haven't automated this test yet.
added file to test ipn manually using curl. haven't automated this test yet.

am2828/catarse_paypal_am,cesvald/catarse_paypal_express,tbly/catarse_paypal_adaptive,stewbawka/catarse_wepay,cesvald/catarse_paypal_express,centaurustech/catarse_paypal_express,am2828/catarse_paypal_am,MHBA/catarse_paypal_express,Betahackers/catarse_offline_payment,devton/catarse_paypal_express,cesvald/catarse_paypal_express,Betahackers/catarse_offline_payment,devton/catarse_paypal_express,joshblour/catarse_paypal_adaptive,stewbawka/catarse_wepay,joshblour/catarse_paypal_adaptive,centaurustech/catarse_paypal_express,tbly/catarse_paypal_adaptive,joshblour/catarse_paypal_adaptive,tbly/catarse_paypal_adaptive,am2828/catarse_paypal_express,MHBA/catarse_paypal_express,stewbawka/catarse_wepay,Betahackers/catarse_offline_payment,am2828/catarse_paypal_express,centaurustech/catarse_paypal_express