7zip-standalone

Usage:

``
var sevenZip = require("7zip-standalone");

// For now, it supports only 2 methods.
sevenZip.add("D:/node/archive.7z", "D:/node/node-7zip-standalone/src/*/");
sevenZip.extract("D:/node/archive.7z", "D:/node/archive/");
``

Tested on windows, linux and mac.