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Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - squizlabs/php_codesniffer 2.8.0 requires ext-tokenizer * -> the requested PHP extension tokenizer is missing from your system.
    - squizlabs/php_codesniffer 2.7.1 requires ext-tokenizer * -> the requested PHP extension tokenizer is missing from your system.
    - squizlabs/php_codesniffer 2.7.0 requires ext-tokenizer * -> the requested PHP extension tokenizer is missing from your system.
    - Installation request for squizlabs/php_codesniffer ~2.7 -> satisfiable by squizlabs/php_codesniffer[2.7.0, 2.7.1, 2.8.0].

  To enable extensions, verify that they are enabled in those .ini files:
    - /usr/local/etc/php.ini
    - /usr/local/etc/php/apc.ini
    - /usr/local/etc/php/ext-10-opcache.ini
    - /usr/local/etc/php/ext-18-session.ini
    - /usr/local/etc/php/ext-20-ctype.ini
    - /usr/local/etc/php/ext-20-curl.ini
    - /usr/local/etc/php/ext-20-dom.ini
    - /usr/local/etc/php/ext-20-exif.ini
    - /usr/local/etc/php/ext-20-fileinfo.ini
    - /usr/local/etc/php/ext-20-filter.ini
    - /usr/local/etc/php/ext-20-gd.ini
    - /usr/local/etc/php/ext-20-geoip.ini
    - /usr/local/etc/php/ext-20-gettext.ini
    - /usr/local/etc/php/ext-20-hash.ini
    - /usr/local/etc/php/ext-20-http.ini
    - /usr/local/etc/php/ext-20-iconv.ini
    - /usr/local/etc/php/ext-20-intl.ini
    - /usr/local/etc/php/ext-20-json.ini
    - /usr/local/etc/php/ext-20-ldap.ini
    - /usr/local/etc/php/ext-20-mbstring.ini
    - /usr/local/etc/php/ext-20-openssl.ini
    - /usr/local/etc/php/ext-20-pdo.ini
    - /usr/local/etc/php/ext-20-pgsql.ini
    - /usr/local/etc/php/ext-20-propro.ini
    - /usr/local/etc/php/ext-20-pspell.ini
    - /usr/local/etc/php/ext-20-raphf.ini
    - /usr/local/etc/php/ext-20-readline.ini
    - /usr/local/etc/php/ext-20-simplexml.ini
    - /usr/local/etc/php/ext-20-sockets.ini
    - /usr/local/etc/php/ext-20-twig.ini
    - /usr/local/etc/php/ext-20-uploadprogress.ini
    - /usr/local/etc/php/ext-20-xml.ini
    - /usr/local/etc/php/ext-20-yaml.ini
    - /usr/local/etc/php/ext-20-zip.ini
    - /usr/local/etc/php/ext-20-zlib.ini
    - /usr/local/etc/php/ext-30-memcache.ini
    - /usr/local/etc/php/ext-30-memcached.ini
    - /usr/local/etc/php/ext-30-pdo_pgsql.ini
    - /usr/local/etc/php/ext-30-phar.ini
    - /usr/local/etc/php/ext-30-xmlreader.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.