Fixes for the tests csproj file. (#131)
Fixes for the tests csproj file. (#131)

1. Make the build specific for .NET 452 only to workaround a bug in NUnit.
2. Remove reference to Google.Ads.GoogleAds nuget package. Build directly against the csproj intsead.
3. Add nuget package references to the new nuget packages for .NET SDK. This allows you to build .NET SDK
projects using dotnet command only.
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