Use ENV[] for AWS secrets info.
Use ENV for group too
Merge pull request #40 from rivimey/feature/vagrant-env-aws-secrets

Replace 'EXAMPLE' in the AWS config with environment variables
ALM-612 return response from XML API as Ruby hash for consistency with JSON APIs
ALM-612 further refactoring to convert all XML Api responses to Ruby hashes
ALM-612 updated f1000 parsing
ALM-612 added helper function to read XML files and parse them into a Ruby hash
ALM-612 fine-tuning of f1000 feed
ALM-612 use string instead of symbol for f100 hash
ALM-612 fixed typo
ALM-612 store monthly data for f1000
ALM-612 fixed small bug in custom url variable
ALM-612 fixed typo in f1000
ALM-612 added default settings for cas
ALM-612 completed refactoring of XML parsing
ALM-612 updated Gemfile for travis
ALM-612 moved perform_get_data method from source_job into retrieval_status
ALM-612 fixed tests for relocated perform_get_data method
ALM-612 further refactoring of sources
ALM-612 refactored more rspec tests for the new source model