package improvements

[pi0]

Nice work @alireza-ab <3

Some suggestions:

• Avoid depending on node_modules structure. Current module implementation, tries to add template from another package (../persian-date/lib/plugin.js). We may instead use this.addModule('@alireza-ab/persian-date/lib/nuxt') and add it as dependency
• Use files field in package.json to only include src and nuxt.js in final pkg (see unpkg. currently everything is published)
• In nuxt documentation, mention components option should be true in nuxt.config

[alireza-ab]

Thank you @pi0.

I adding these suggestions soon. 🙂