add payment icons for taopix checkout

taopix-payment-icon.css

		div.paymentmethodlist>input[value="PAYPAL"] ~ label:after {
			background-repeat: no-repeat;
			background-image: url(/images/payments/paypal-640x188.png);
			background-size: 48px 14px;
			display: inline-block;
			width: 48px;
			height: 14px;
			content: "";
			margin-left: 20px;
		}
		
		div.paymentmethodlist>input[value="CARD"] ~ label:after {
			background-repeat: no-repeat;
			background-image: url(/images/payments/visa-mastercard.png);
			background-size: 52px 14px;
			display: inline-block;
			width: 52px;
			height: 14px;
			content: "";
			margin-left: 20px;
		}