Merge pull request erlcloud#199 from izinin/s3_get_location_fix

bug fix : AWS S3 get bucket location call returns empty result for buckets in US region

fix dialyzer and eunit

Merge pull request erlcloud#170 from smilerlee/master

DynamoDB new features implementation

vsn 0.9.1

Merge pull request erlcloud#117 from esl/sns-https-support

HTTPS support for erlcloud_sns

reindent all files with default emacs' erlang-mode indent rules:

- no tabs
- indent level = 4