Client receives & sends refund amount to MWS
Merge branch 'master' of https://github.com/Flubit/merchant-api-client.git into support-partial-refund
Update parameter doc
Addition of new client methods for [PATCH|POST] /1/products.json
Merge pull request #17 from Flubit/support-new-product-end-points

Addition of new client methods for [PATCH|POST] /1/products.json
Merge pull request #16 from Flubit/support-partial-refund

Support new end points