- add new docs for loading, exploring, sharing, embedding, and offline usage
- add license file / license banner
electron app:
- for now, don't bundle docs, open in native browser
embeds:
- support 'embed' option, 'replayonly' or 'full' (default if no url)
ui:
- display package.json version in info menu
package.json:
- update scripts to match README
- move electron entrypoint into extraMetadata
- add scripts for packaging as module
README: minor edits
