docs: update README how to build and run

[xavierskip]

This project is very suitable for use on devices without any network connectivity, but there is a lack of instructions on how to build and run it. I have added a section on how to build static files and host on own web server.

Please point out any shortcomings.

[netlify]

✅ Deploy Preview for qrss ready!

Name	Link
🔨 Latest commit	a0f1f77
🔍 Latest deploy log	https://app.netlify.com/sites/qrss/deploys/68185553aaf46b0008b88355
😎 Deploy Preview	https://deploy-preview-24--qrss.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[iuvi7]

How to make same on phone?

[xavierskip]

How to make same on phone?

Mobile devices generally have network capabilities, allowing you to access "https://qrss.netlify.app/" in a networked environment. This way, it can still be used in an offline environment or installed as a PWA application.

[LittleSound]

LGTM, Thnaks!

I always receive similar questions from many people, thank you for answering their doubts.

[iuvi7]

How to make same on phone?

Mobile devices generally have network capabilities, allowing you to access "https://qrss.netlify.app/" in a networked environment. This way, it can still be used in an offline environment or installed as a PWA application.

After installing QRs as PWA ain't works for me :( It installed but functionality ain't works