visual-studionugettwitterizer

Opening project in Visual Studio fails due to nuget.targets not found error

So I downloaded Twitterizer from http://www.twitterizer.net/downloads/

I try to open it in Visual Studio and get all these nuget errors:

The imported project "C:\Twitterizer\.nuget\nuget.targets" was not found. 
Confirm that the path in the <Import> declaration is correct, and that the file 
exists on disk.

What is going on. How do I deal with this?

Solution
    1. Install Nuget.
    2. Right click on the solution and select "Enable NuGet Package Restore". In Visual Studio 2013 and later, select "Restore NuGet Packages" instead.
    3. Click Ok on the warning.
    4. Close and re-open the solution.

    Should now be hunky-dory.