composer global require "fxp/composer-asset-plugin:~1.1.1" 找不到 1.0.0 的包，改成 1.1.1 好了

第五步的时候出错了

C:\wamp\www\yii2\advanced>php composer.phar global require "fxp/composer-asset-plugin:1.0.0"
Changed current directory to C:/Users/Floruit/AppData/Roaming/Composer
You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for fxp/composer-asset-plugin 1.0.0 -> satisfiable by fxp/composer-asset-plugin[v1.0.0].
    - fxp/composer-asset-plugin v1.0.0 requires composer-plugin-api 1.0.0 -> no matching package found.

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

Installation failed, deleting ./composer.json.

C:\wamp\www\yii2\advanced>