Added S3 as a deployment artifact source using credentials in data_bags, ENV variables or IAM Instance Roles on EC2
Fixed bucket and object existence checks and related rspec tests, stopped windows from trying to install libxml/libxslt
Added another S3 reference in README.md
Fixed dependencies for aws-sdk (added gcc/make, changed action) and renamed config_for method
Refactored the from_<source>? methods to make them actually return a Boolean (as their docs stated) and added spec tests.  Also removed duplicated methods in the LWRPs
Fixed spacing on README.md and missed from_s3? from refactoring
Removed duplicated text
Moved license to LICENSE
Merge pull request #71 from jonathanq/s3-artifact-deploy

Amazon S3 as an artifact deployment source
Merge pull request #73 from RiotGames/license

Moved license to LICENSE
bump version, update changelog
remove references to nexus_config_for
only download when the file is not already there
use the data_bag_config_for api correctly
add a test for making sure files dont download twice
Merge pull request #76 from RiotGames/bugfixes

Bugfixes for #75 and #74
Update README.md

Fix broken flowchart image
Added simple ubuntu support, fixes #79. Tested on 12.04.
Corrected usage of non-existing method.
Changed to log a warning instead of fatal! to preserve windows support.