Fixes #9, build failing when running unit tests. The NUnit executables were ignored in .gitignore file. Added VS .gitignore file settings from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore.
Fixed bug in build script where wrong build configuration was passed to NUnit.
Merge pull request #11 from NightOwl888/patch-9

Patch 9