Added extra order detail parameters, automatic item total
Added logo image and border color customisations
Added missing methods
I should pay attention: fixed getters and setters
Removed unused parameters
Fixed test
Merge branch 'master' into more-order-details
Merge pull request #15 from martinbean/payment-page-customization

Added logo image and border color customisations
Merge latest upstream
Merge pull request #14 from tomsowerby/more-order-details

Added extra order detail parameters