All extension methods should be in the root namespace
i.e. in namespace SevenDigital.Api.Wrapper not  SevenDigital.Api.Wrapper.Extensions
despite the folder structure
So that they can be found easily by consumers without adding another "using" statement
This was mostly true, just not consistent
Merge pull request #170 from AnthonySteele/extension-namespace-tweaks

All extension methods should be in the root namespace