title: Composer some problems
body: <p>i have a problem when installing composer, the folders {vendor &amp; bin} doesn't been created !
  And when i create a project with composer, or updating it, i get this result</p>
  
  <blockquote>
    <p>Loading composer repositories with package information Updating
    dependencies (including require-dev)</p>
    
    <p>[ErrorException]
    file_put_contents(C:/Users/KDragon/AppData/Local/Composer/repo/https---repo.packagist.org/provider-laravel$laravel.json):
    failed to open stream: Invalid argument</p>
    
    <p>update [--prefer-source] [--prefer-dist] [--dry-run] [--dev]
    [--no-dev] [--lock] [--no-custom-installers] [--no-autoloader]
    [--no-scripts] [--no-progress] [--no-suggest] [--with-dependencies]
    [--with-all-dependencies] [-v|vv|vvv|--verbose]
    [-o|--optimize-autoloader] [-a|--classmap-authoritative]
    [--apcu-autoloader] [--ignore-platform-reqs] [--prefer-stable]
    [--prefer-lowest] [-i|--interactive] [--root-reqs] [--] []...</p>
  </blockquote>