Add live reload option to "run mode"

[charlielee]

It would be very nifty indeed

[lvlirko]

Maybe not the best solution, but it works fine for me.

nw.Window.open(url, options, (win) => {
  win.on("loaded", () => {
    win.show()
  })
})

if (process.versions["nw-flavor"] === "sdk" && process.env.NODE_ENV === "development") {
  fs.watch("src", { recursive: true }, (/*eventType, filename*/) => {
    const nwWindow = nw.Window.get()
    nwWindow.reload()
  })
}