Stuck at extracting downloaded packages on Windows 7

[andresilvasantos]

I had an issue when trying to build packages for any type of platform due to the dependency of cross-zip.

When debugging I realized the package creation completely got stuck at the moment of:

Extracting file.zip to path

I found out, cross-zip dependency has this observation in its README:

This package requires .NET Framework 4.5 or later and Powershell 3. These come pre-installed on Windows 8 or later.

As I had installed Powershell v2, the extraction hanged without any other additional information. I was hoping you could add this minor info to your docs.

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