Maknz\Slack\Client::__construct PHP Method

    public function __construct($endpoint, array $attributes = [], Guzzle $guzzle = null)
    {
        $this->endpoint = $endpoint;
        if (isset($attributes['channel'])) {
            $this->setDefaultChannel($attributes['channel']);
        }
        if (isset($attributes['username'])) {
            $this->setDefaultUsername($attributes['username']);
        }
        if (isset($attributes['icon'])) {
            $this->setDefaultIcon($attributes['icon']);
        }
        if (isset($attributes['link_names'])) {
            $this->setLinkNames($attributes['link_names']);
        }
        if (isset($attributes['unfurl_links'])) {
            $this->setUnfurlLinks($attributes['unfurl_links']);
        }
        if (isset($attributes['unfurl_media'])) {
            $this->setUnfurlMedia($attributes['unfurl_media']);
        }
        if (isset($attributes['allow_markdown'])) {
            $this->setAllowMarkdown($attributes['allow_markdown']);
        }
        if (isset($attributes['markdown_in_attachments'])) {
            $this->setMarkdownInAttachments($attributes['markdown_in_attachments']);
        }
        $this->guzzle = $guzzle ?: new Guzzle();
    }