- Increase the version number in the manifest.json file.
- Create a zip file of the root folder.
- Goto: https://chrome.google.com/webstore/devconsole.
- Select "Chrome Store Admins" on the dropdown at the top right.
- Select the "Scrum 2 Trello" entry.
- Select "Package" on the left sidebar.
- Upload the zip file via the button on the top right.
- Publish. (only works if the developer registration fee has been paid)