Added configuration for region parameter to configuration file, added an additional parameter to the constructor of the rackspace api, that takes a region, this is also defaulted to LON.  Then updated the service.yml to pass the region parameter to the constructor.
Added new parameter to the the Readme.md file to show how to add default region to the yaml config.
Added new parameter to the the Readme.md file to show how to add default region to the yaml config.
Merge pull request #10 from cdwlighting/master

Add Region as a configuration parameter