Install phpbrew with Symfony 3 requirements on OS X

symfony-brew-install.sh

## Requirements for PHPbrew

xcode-select --install
brew install automake autoconf curl pcre bison re2c mhash libtool icu4c gettext jpeg openssl libxml2 mcrypt gmp libevent
brew link icu4c
brew link --force openssl
brew link --force libxml2

## Adittional requirement

brew install readline

## Install phpbrew

curl -L -O https://github.com/phpbrew/phpbrew/raw/master/phpbrew; chmod +x phpbrew
sudo mv phpbrew /usr/local/bin/phpbrew

## Start environment (this is not local, it is a globally command *per user*)
phpbrew init

## PHP7 with symfony reqs
phpbrew install php-7.0.14 as php7 +default+mb+mysql+sqlite+pdo+fpm+json+iconv+mcrypt+intl+exif+gd+curl

## Switch php version
phpbrew switch php7