Enabled nuget package restore.

modified:   .gitignore
new file:   .nuget/NuGet.Config
new file:   .nuget/NuGet.exe
new file:   .nuget/NuGet.targets
modified:   UnitTests/UnitTests.vbproj
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deleted:    packages/NUnit.2.5.10.11092/fit-license.txt
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deleted:    packages/NUnit.2.5.10.11092/lib/pnunit.framework.dll
deleted:    packages/NUnit.2.5.10.11092/license.txt
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deleted:    packages/NUnit.2.5.10.11092/tools/runpnunit.bat
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This is getting frustrating.