Not compatible with pintura module from package.json/npm

[Leftium]

The pintura module downloaded from npm does not have the util/packages-dir.js file. Thus this happens:

$ node index.js
...
Error: Cannot find module 'pintura/util/packages-dir'
...
    at Object.<anonymous> (c:\....\persevere-example-wiki\index.js:20:38)

workaround: ensure latest pintura module is installed from https://github.com/persvr/pintura

I believe this is a regression resulting from this commit: kriszyp@7bf6ed1#L0L20

[neonstalwart]

to expand on the instructions for the workaround...

$ node index.js
...
Error: Cannot find module 'pintura/util/packages-dir'
...
    at Object.<anonymous> (c:\....\persevere-example-wiki\index.js:20:38)

$ npm install persvr/pintura
$ node index.js
Listening on port 8080
persevere>