Revert "Fix documentation for new Composer usage"
Revert "Fix documentation for new Composer usage"

This reverts commit dd4b503e5d71c0a1b95037d542a677c2e2a5b31f.

svennam92/php-buildpack,svennam92/php-buildpack,svennam92/php-buildpack,svennam92/php-buildpack,svennam92/php-buildpack,svennam92/php-buildpack