wapmorgan/php-code-fixer dev-master requires docopt/docopt 1.0.0-rc1 -> no matching package found.

[Gemorroj]

Not work composer installation.

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for wapmorgan/php-code-fixer dev-master -> satisfiable by wapmorgan/php-code-fixer[dev-master].
    - wapmorgan/php-code-fixer dev-master requires docopt/docopt 1.0.0-rc1 -> 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://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.

[wapmorgan]

Ok, I fixed readme. You need to specify minimum-stability as dev in composer.json before installation.