Changing from HG repo to Git.

Upgrading from VS2010 to VS2012.
Updating NuGet dependencies for Unit Tests.
Updating copyright date in Readme.txt.
Adding IsAtMost, IsAtLeast, IsNotNegative Validation and Tests.
Updating NuGet AutoFixture w/Moq.
Merge branch 'master' into jcomtois/Validation
Adding IsGreaterThan, IsLessThan,IsEqualTo, DoesNotEqual to Validation.