Update retrieve to accept query params#154

wscourge merged 3 commits intomainchartmogul/chartmogul-php:mainfrom

wiktor/ome-418-add-validation_type-support-to-invoices-line-items-andchartmogul/chartmogul-php:wiktor/ome-418-add-validation_type-support-to-invoices-line-items-andCopy head branch name to clipboard