Sale should not attach shipping cost with shipment
Merge pull request #6 from tarunbhardwaj/shipping_cost_sale

Sale should not attach shipping cost with shipment
Round the shipping_amount according to currency #5707

Quantize the shipping amount as per currency
Merge pull request #7 from tarunbhardwaj/currency-digit-5707

Round the shipping_amount according to currency #5707
Add get_rates method
Merge pull request #8 from tarunbhardwaj/get_rates

Add get_rates method
get_sale_price should return currency.id not currency