AWS is working on the latest version of their Ruby SDK and currently this library doesn't seem to support it.
Resolving dependencies........
Bundler could not find compatible versions for gem "aws-sdk":
In Gemfile:
fake_sns (>= 0) ruby depends on
aws-sdk (~> 1.30) ruby
aws-sdk (2.0.5.pre)
AWS is working on the latest version of their Ruby SDK and currently this library doesn't seem to support it.