add card token
update test suites
Merge pull request #5 from ecomcharge/card-token

Card token
ignore ssl certs errors
Merge pull request #6 from ecomcharge/curl-to-ignore-ssl-peer-cert

ignore ssl certs errors
add gatewaytransport exception test
trow Exception class from global namespace
catch transport exception and build response obj
refactor Response->getMessage() to return string
fix test suites
fix code
rename test method name