composer.json

{
    "name": "crossjoin/pre-mailer",
    "description": "Crossjoin\\PreMailer converts CSS in a given HTML source to inline styles and optimizes it for sending it via e-mail. It also creates a text version of the HTML source. Requires PHP 5.4+.",
    "keywords": ["premailer", "e-mail", "mail", "inline", "css", "styles", "html", "text", "php"],
    "homepage": "https://github.com/crossjoin/PreMailer",
    "license": "MIT",
    "authors": [
        {
            "name": "Christoph Ziegenberg",
            "email": "ziegenberg@crossjoin.com",
            "role": "Developer"
        }
    ],
    "support": {
        "issues": "https://github.com/crossjoin/PreMailer/issues",
        "source": "https://github.com/crossjoin/PreMailer"
    },
    "require": {
        "php" : ">=5.4.0",
        "ext-dom" : "*",
        "ext-mbstring" : "*",
        "crossjoin/css": "^1.0.3",
        "symfony/css-selector": "^2.7.1"
    },
    "autoload": {
        "psr-4": {
            "Crossjoin\\PreMailer\\": "src/Crossjoin/PreMailer/"
        }
    }
}