Secure Rubygems source and target a specific version of the
newrelic_plugin.
Add support for Riak CS installations in a proxy configuration.
Align date format with s3curl.
Merge pull request #1 from basho-labs/hc-proxy-support

Add support for Riak CS installations in a proxy configuration
Merge pull request #1 from drewkerrigan/master

Merging Hector's changes