Update composer.json

Update composer.json

Update composer.json

Merge pull request AuthorizeNet#53 from fulldecent/patch-1

Remove error if autoloader does not find class

Merge pull request AuthorizeNet#66 from goetas/goetas-serializer

Restore goetas jms serializer

Merge pull request AuthorizeNet#54 from AuthorizeNet/future

Future

Update .travis.yml

Update cert.pem

Merge pull request AuthorizeNet#47 from AuthorizeNet/updatedPem

Update cert.pem

Updating the certificate