Fix grammatical error
Rename 'Diners' to 'Diners Club'
Use extern constant card brand string in place of
literal string
Refer to self instead of class name
Replace card brand logos
Add small card brand logos
Add 'we accept' to localization files
Show supported brands in WPYPaymentViewController
Make font size of pay button in WPYPaymentVC smaller
Adjust design of price view

- change color of supportedBrandLabel
- change size of priceField depending on os version