configuration `layoutsDir` & `partialsDir` is invalid

After 3.0.1 was released, the configuration options layoutsDir and partialsDir became invalid.

utils.assign(this, {
        handlebars     : Handlebars,
        extname        : '.handlebars',
        layoutsDir     : 'views/layouts/',
        partialsDir    : 'views/partials/',
        defaultLayout  : undefined,
        helpers        : undefined,
        compilerOptions: undefined,
}, config);

Because after Fixes #147, the custom configuration options layoutsDir and partialsDir will be overridden.

    var viewsPath = options.settings && options.settings.views;
    if (viewsPath) {
        view = this._getTemplateName(path.relative(viewsPath, viewPath));
        this.partialsDir = path.join(viewsPath, 'partials/');
        this.layoutsDir = path.join(viewsPath, 'layouts/');
    }

I hope it can be repaired as soon as possible.Thank you.

[dogbutcat]

Yeah, I also found it. It is needed when developer not defined the layoutsDir and partialsDir as given default config path here is relative https://github.com/ericf/express-handlebars/blob/5d27bb50ba299d7ba185dfc5b9f8057bf7129256/lib/express-handlebars.js#L24-L32

so I think maybe change like this is fine for global custom one or default one

    utils.assign(this, {
        handlebars     : Handlebars,
        extname        : '.handlebars',
       // layoutsDir     : 'views/layouts/',
       // partialsDir    : 'views/partials/',
        defaultLayout  : undefined,
        helpers        : undefined,
        compilerOptions: undefined,
    }, config);

and

    if (viewsPath) {
        view = this._getTemplateName(path.relative(viewsPath, viewPath));
        this.partialsDir =  this.partialsDir || path.join(viewsPath, 'partials/');
        this.layoutsDir = this.layoutsDir || path.join(viewsPath, 'layouts/');
    }

I changed on my local like this and it work fine with my old settings

[sahat]

Thank you for reporting the issue. The bug has been fixed and the new version v3.0.2 is now published on npm.