Renamed tests file from SomeClassTests to ArithmeticTests.
Removed references to 'SomeApplication' from namespaces - replaced with 'Femah.Examples.Additionator'
34 - Femah.Examples - Push Web.Additionator example app to Azure website for demonstration

- Added clone of basic Powershell build scripts used by the Femah
library
- Added NUnit and NUnit.Runners NuGet packages, and modified tests
accordingly