paypro: a more complete example of how to use server outputs.
start adding script tests
add Script validation tests
add is* tests for Script
Merge pull request #466 from martindale/payment-protocol-example

Add README to payment protocol reference implementation.
add getSignatures tests
add getHashType tests
Merge pull request #462 from chjj/paypro_example

paypro: a more complete example of how to use server outputs.
paypro: expose RootCerts on PayPro.
Merge pull request #470 from chjj/expose-certs

paypro: expose RootCerts on PayPro.
paypro: minor fixes.
Merge pull request #471 from chjj/paypro_fixes

paypro: minor fixes.
Merge pull request #467 from maraoz/add/missing-tests

Add missing tests for new methods added