Add Deploy to Vercel section with one click button

[sdairs]

Adds a section to the README that describes deploying the dashboard to Vercel with a one-click button

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Name	Status	Preview	Updated
analytics-dashboard	✅ Ready (Inspect)	Visit Preview	Dec 13, 2022 at 10:08AM (UTC)

[alejandromav]

Thanks for this!

Looks good to me, I think it's a good idea. I just have a couple questions:

• Should we add this to the "3. Visualize the metrics on a readymade dashboard" section, or add a new one as this PR suggests?

  I don't have any strong feelings about this, just whatever feels more organized and well-structured.

• Should we add the "demo" parameters to the deploy button? I think it looks better, for example:

  https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Ftinybirdco%2Fweb-analytics-starter-kit%2Ftree%2Fmain%2Fdashboard&project-name=analytics-dashboard&repository-name=web-analytics-starter-kit&demo-title=Dashboard&demo-description=Analytics%20Dashboard&demo-url=https%3A%2F%2Fanalytics.tinybird.co%2F&demo-image=https%3A%2F%2Fanalytics.tinybird.co%2Fbanner.png

  

• And finally, I think this button should just deploy the dashboard, right?

  In that case, I think we should also add the /tree/main/dashboard path to the repo url.

Thoughts? Thanks!

[sdairs]

@alejandromav

1. I kept this seperate so as to not confuse the existing 1,2,3 flow, so it's obvious there is the hosted dashboard example + you can host your own
2. Agreed
3. It already only deploys the dashboard to Vercel using the 'root directory' parameter. Using the full Git URL means the user gets a full repo fork, which is desirable. Suffixing the URL with the tree only gets a partial clone.