Although http status code and http error message are helpful in error handling,
TokenResponseException, throwed by oauth\HTTPClient if an error occured during
the http request, does not have fields/methods which indicate them directly.
Solve it by adding HttpTokenResponseException which has indicators of http status
code and http error message, and throwing it instead of TokenResponseException.
Signed-off-by: Naoto Kobayashi <naoto.kobayashi4c@gmail.com>
using composer for the oauth lib dependency, autoloading for our own
classes. Services are now their own action plugins to inherit from our
Service class.
All still untested and broken
