Bunch of changes
- Update to use .NET 4.0
- Change version to 2.0
- Enable code to get latest ServiceRuntime library
Apply code review
Merge pull request #196 from ogail/master

Updates to 2.0 version
Add ArgumentNullException to white exception list
CR
Apply feedback from @JSkimming
Merge pull request #205 from ogail/master

Add ArgumentNullException to white exception list
Merge pull request #207 from WindowsAzure/dev

Merge dev into master