Add build instructions for Windows

[ivorobts]

No description provided.

[jjfumero]

Hi @ivorobts ,
any reason to alter the build instructions from the Linux build?

This also works on Windows, assuming the Spectre-mitigation libraries are installed (see #56):

mkdir build
cd build
cmake ..
cmake --build . --config Release

[Jemale]

@ivorobts Ditto what @jjfumero said. You could list the default CMake invocation and provide setting the nmake generator as a separate example if you want.

[ivorobts]

Hi @ivorobts ,
any reason to alter the build instructions from the Linux build?

This also works on Windows, assuming the Spectre-mitigation libraries are installed (see #56):

mkdir build
cd build
cmake ..
cmake --build . --config Release

The reason is that I was not able to compile it on Windows without additional actions, e.g. Spectre-mitigation libraries installation. Usage of nmake was much more easier for me. But I agree that we can add instructions for Windows with Visual Studio and the additional way with makefile&nmake.