Breaks on non-Windows systems without unzip package installed

[st-sloth]

Code in this project relies on the notion that if the system is not Windows, then it has CLI command unzip available. However some systems, like Manjaro Linux, don't come with unzip already installed. So cross-unzip just fails with spawn unzip ENOENT.

[fritx]

@st-sloth my bad..

We could probably add more supports, like https://github.com/uiureo/node-screencapture/pull/7/files

[st-sloth]

Dunno, I don't think depending on external tools will ever be safe anyway. https://www.npmjs.com/package/extract-zip seem to manage with just JS.

[fritx]

@st-sloth yeah that would have both pros and cons.

I had been using tools implemented in pure JS before, but there would be problems like performance, so this library would be an alternative from them.