additional documentation for 1.1

[Fil]

• import.meta.resolve Document self-hosting of npm: imports #1001
• do we want version badges? version badge #1000
• keywords document keywords #960

[bmesuere]

Maybe also some upgrade instructions for existing Framework projects?

[Fil]

To upgrade Framework, cd into the project and type

• npm upgrade "@observablehq/framework", or
• yarn upgrade "@observablehq/framework"

To upgrade the create command (npm init "@observablehq") you might have to delete the npm cache with rm -rf .npm/_npx/ or wherever the cache for npx lives. I don't know if there is a better way—but hopefully this should not be necessary for future releases—we had to modify the create command this time because Framework is now transpiled from typescript to javascript.

[mbostock]

Remaining work covered by #1001.