composer install yii2出错啊 [ 2.0 版本 ]

composer install yii2出错，出错的信息如下：

vagrant@vagrant-ubuntu-trusty-64:/home/websites$ composer create-project --prefer-source yiisoft/yii2-app-basic basic
Installing yiisoft/yii2-app-basic (2.0.11)

Installing yiisoft/yii2-app-basic (2.0.11): Failed to download yiisoft/yii2-app-basic from source: The Process class relies on proc_open, which is not available on your PHP installation.
Now trying to download from dist
Installing yiisoft/yii2-app-basic (2.0.11): Loading from cache
Created project in basic
Loading composer repositories with package information
Updating dependencies (including require-dev)
[Composer\Repository\InvalidRepositoryException] 
No valid bower.json was found in any branch or tag of https://github.com/jquery/jquery-dist.git, could not load a package from it.

create-project [-s|--stability STABILITY] [--prefer-source] [--prefer-dist] [--repository REPOSITORY] [--repository-url REPOSITORY-URL] [--dev] [--no-dev] [--no-custom-installers] [--no-scripts] [--no-progress] [--no-secure-http] [--keep-vcs] [--no-install] [--ignore-platform-reqs] [--] [] [] []

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