Readme review

[augustogoncalves]

• Adjust badges: Viewer v7, add Assets,
• Description: links are pointing to developer.autodesk.com, adjust to forge.autodesk.com, Viewer link points to v6, and has a "under construction" line...
• Please have at lest 1 thumbnail.png (exact name, so it appears on the list, thumbnail-1.png will not work)
• Suggestion: write on the thumbnail, over the panel, a text indicating the extension name (mentioned on the text), makes easier to identify what is what
• Some images have links to videos, please add a text with link
• Live link not working: https://bim360assets.herokuapp.com
• At the end of Work with your models section you point to other samples, please move that to "Further reading"
• Running locally sections seems to be missing images
• "Further reading" section contains links to bim360-private and some TDB

[yiskang]

Thank you for your kind feedback. I followed your suggestions to update most of the README content but left the TBD items since we're still reviewing the tutorial and waiting for the real links to them. I will update them after everything is done by the engineering team.

[yiskang]

Updated with this PR https://github.com/Autodesk-Forge/forge-bim360-assets.viewer/pull/2