lacking of straightforward example

[Jules]

Hi there,

Thanks for all, it works wonderfully.

I think it would be great to put a really easy example at the top of your README for clarity.

Following example might be obvious for everyone, but it wasn't for me:

$ echo '{"token":"1234"}'  | jsawk 'return this.token'
1234

(feel free to close this issue if you want)

[Zuhry Mousa]

https://github.com/micha/jsawk#examples is pretty straightforward.