Shared Resharper Settings for the Solution

Added a Resharper DotSettings file for the solution with a few templates and the copyright header.

Not sure if you want this in the repository, but I find it useful for maintaining a consistent coding style for developers on the project who use Resharper. If others agree that this is useful, I will take the time to configure all of the resharper coding styles to match those of the project.

So far, it just has code templates for creating test classes, test methods and inserting the copyright.

.gitattributes was changed to respect the fact that Resharper settings files are Unix format.