Pass in kwargs into AWSClientException

setup.py

@@ -21,7 +21,7 @@ DESC = 'A low-level Amazon Web Services API client for Tornado'
 TESTS_REQUIRE = ['nose', 'mock', 'coverage']
 setuptools.setup(name='tornado-aws',
-                 version='0.4.0',
+                 version='0.4.1',
                  description=DESC,
                  long_description=open('README.rst').read(),
                  author='Gavin M. Roy',

tornado_aws/__init__.py

@@ -6,6 +6,6 @@ from tornado_aws.client import AWSClient
 from tornado_aws.client import AsyncAWSClient
 from tornado_aws.client import exceptions
-__version__ = '0.4.0'
+__version__ = '0.4.1'
 __all__ = ['AWSClient', 'AsyncAWSClient', 'exceptions']

tornado_aws/exceptions.py

@@ -15,7 +15,8 @@ class AWSClientException(Exception):
     fmt = 'An error occurred'
     def __init__(self, **kwargs):
-        super(AWSClientException, self).__init__(self.fmt.format(**kwargs))
+        super(AWSClientException, self).__init__(self.fmt.format(**kwargs),
+                                                 kwargs)
 class AWSError(AWSClientException):