add is_valid fake method to enable beanstream credit cards#115

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Chris7 wants to merge 2 commits intoagiliq:masterfrom Chris7:beanstreamFix

+4-1

Commits on Nov 21, 2014

add is_valid fake method to enable beanstream credit cards
Chris7
committed

Commits on Nov 24, 2014

move is_valid method to gateway to handle other cards lacking is_valid method
Chris7
committed