Changed handling of http exception unmarshalling response to provide the HTTP status and message on the AmazonClientException.
Adds support for sending basic authentication to proxy servers pre-emptively, configurable via ClientConfiguration.
Merge pull request #160 from bloomberg/marshalling_exception_handling

Changed handling of http exception unmarshalling response to provide the...
Updates to alternative implementation, using a custom HttpRequestInterceptor in the HttpClientFactory to add the authentication details required to outgoing requests.
Merge pull request #170 from groja/master

Pre-Emptive Basic Authentication option for proxy servers