add travis support.
add travis support.

Payum/OmnipayV3Bridge,formapro-forks/Payum,fullpipe/Payum,StoreFactory/Payum,Payum/Payum,StoreFactory/Payum,StoreFactory/Payum,digisec/Payum,aitboudad/Payum,Payum/Payum,Payum/OmnipayBridge,fullpipe/Payum,digisec/Payum,ASKozienko/Payum,staabm/Payum,formapro-forks/Payum,formapro-forks/OmnipayBridge