Merge pull request #55 from mreinsch/locale_specific_paypal_urls

Locale specific paypal urls
version bump
Merge branch 'master' of github.com:tc/paypal_adaptive
Implement dynamic http verify mode based on paypal env (for IPN notification).
Move verify_mode setting to the Config class.
Merge pull request #71 from mikong/dynamic_verify

Dynamic verify mode based on Paypal environment
version bump
include more details in error in case the HTTP request doesn't return valid JSON