Changing paramater building

Moved transaction parameters  to a single package
Changing paramater building

Moved transaction parameters  to a single package
Changing paramater building

Moved parameters packages
Changing paramater building

Changed the rest of the operations to use parameter objects, changed the creation of charges and payouts with cards and bankAccounts so they receive a Create_Params instead.
Changing paramater building

Changed refund to new parameter object, removed the option to add description and order id for the refund. Updated readme.