Tests fail when building Phar

[danielbachhuber]

From #6

Fatal error: Uncaught InvalidArgumentException: The "vendor/wp-cli/wp-cli/vendor/wp-cli/config-command/templates" directory does not exist. in vendor/symfony/finder/Finder.php:656
    Stack trace:
    #0 vendor/wp-cli/wp-cli/utils/make-phar.php(139): Symfony\Component\Finder\Finder->in('/home/travis/bu...')
    #1 {main}
      thrown in vendor/symfony/finder/Finder.php on line 656

Notice the path is incorrect: vendor/wp-cli/wp-cli/vendor/wp-cli/

[danielbachhuber]

Tests seem to be passing again, although I've added wp-cli/config-command#8