Changes in v2.4

Introduced V2 licensing.

Fixed an issue where NCrunch would fail to save cache data for solutions containing NUnit tests.

Fixed an issue that was preventing NCrunch from correctly loading the MS Fakes intellitrace profiler in VS2013.

Fixed an issue that was causing exceptions to be thrown when trying to work with files referenced from the root directory of a drive.

Introduced a speculative fix to resolve an issue where NCrunch was not looking in the correct place for the .NET v4.5.1 sn.exe