support import existing bookmarks

[徐叔卿]

First, you’ll need to export your bookmarks into a file that floret can read. Here’s how to export bookmarks from some common places:

• Firefox
  1. Select Show All Bookmarks from the Bookmarks menu.
  2. A new window called Library will open.
  3. Click on the icon that looks like a star and choose ‘Backup…’.
• Safari: choose File -> Export Bookmarks.
• Chrome:
  1. Go to the Bookmarks menu and choose Bookmark Manager
  2. Click the Organize link in the blue navigation bar
  3. select Export Bookmarks to HTML File…