Adding meta data to route definition

[nkramaric]

I am piggybacking off of iherem's PR found here: #152

His PR notes below:

When I can't specify additional values and send them to custom handlers. Then I add the metadata into the constuctor to specify the value of what will be added to the custom handler.

Suppose I want to specify the locale of route routes.add({ name: 'home', pattern: '/home', page: 'home', metadata: { locale: 'en' } })

The custom handlers receive the metadata

const handler = routes.getRequestHandler(app, ({ req, res, route, query }) => { const { metadata: { locale }, page } = route; renderWithCache(req, res, page, locale, query); }); and the simple case if you want to specify some of route for cache just add the { cache: true } in the metadata

reference issue #127

[coveralls]

Coverage decreased (-0.2%) to 94.583% when pulling 9850a4d01fee5225f8de47658d51e2d31529e0e1 on nkramaric:feature/pr-meta-data into 08e8bbeaa76c5ec194abea388a193bedac7f35fc on fridays:master.

[subhajeet2107]

Please merge this, we need meta data in routes as well