Working with the documentation in anticipation of adding a contribution guide and object model docs
Preparing to add even more documentation
Updates for documentation and small changes based on internal suggestions
Fixed a bug in virtual servers that was preventing upgrades from working properly.
Added unit tests to preemptively check virtual server upgrade functionality
Allow the use of symbols to locate services
Updated the changelog and base to begin collecting 2.1.1 changes
Added the first bit of Model Layer documentation and renamed the Contribution Guide placeholder.
Fleshed out the contribution guide and ran everything through a round of spell checking
Merge pull request #36 from softlayer/softlayer_api_RC_2.1.1

Merged 2.1.1 changes.  Includes improved documentation and a bug fix for Virtual Server upgrades