(#163) Added default .editorconfig file

For using in Visual Studio, you will need to add this extension:
http://visualstudiogallery.msdn.microsoft.com/c8bccfe2-650c-4b42-bc5c-845e21f96328
(#157) Moved root Settings.StyleCop file

- So that the StyleCop settings can be shared between different projects, let's move it to the root of the Source Folder
Merge pull request #173 from gep13/feature/Issue-163

Adding EditorConfig file