alteration in test adress, validate requeriments and treatment of shipping state

alteration in test adress, validate requeriments and treatment of
shipping state
Alters in layout code and verification for IPv6 in method verifyURLTest

Alters in layout code and verification for IPv6 in method verifyURLTest
Some code style
Some code style
More code style
Removing whitespaces at the end of some lines
Update PaymentMethodCode
Fix PaymentMethodcode
Update README.md