default node_name to fqdn. fixes #11
Load config in test
Set ChefRundeck.username in test
Set web_ui_url in test
Merge pull request #18 from simplymeasured/default-to-fqdn-for-node-name

default node_name to fqdn
Added Nokogiri development dependency.
Used for XML validation in testing.
Added simple test to validate XML output.