Ubuntu Extension Manager 插件卸载

Ubuntu 上使用Extension Manager 安装插件，但目前无法在Extension Manager 中卸载。
卸载方式可以通过 gnome-extensions 命令进行卸载：

Usage:
  gnome-extensions COMMAND [ARGS…]

Commands:
  help      Print help
  version   Print version
  enable    Enable extension
  disable   Disable extension
  reset     Reset extension
  uninstall Uninstall extension
  list      List extensions
  info      Show extension info
  show      Show extension info
  prefs     Open extension preferences
  create    Create extension
  pack      Package extension
  install   Install extension bundle

示例：

zhaoc@zhaoc:/$ gnome-extensions list
user-theme@gnome-shell-extensions.gcampax.github.com
dock-unroll@fthx
ding@rastersoft.com
tiling-assistant@ubuntu.com
ubuntu-appindicators@ubuntu.com
ubuntu-dock@ubuntu.com
zhaoc@zhaoc:/$ gnome-extensions uninstall dock-unroll@fthx