public function render($text, $mode = 'gfm', $context = null)
	{
		// The valid modes
		$validModes = array('gfm', 'markdown');

		// Make sure the scope is valid
		if (!in_array($mode, $validModes))
		{
			throw new \InvalidArgumentException(sprintf('The %s mode is not valid. Valid modes are "gfm" or "markdown".', $mode));
		}

		// Build the request path.
		$path = '/markdown';

		// Build the request data.
		$data = str_replace('\\/', '/', json_encode(
				array(
					'text'    => $text,
					'mode'    => $mode,
					'context' => $context
				)
			)
		);

		// Send the request.
		$response = $this->client->post($this->fetchUrl($path), $data);

		// Validate the response code.
		if ($response->code != 200)
		{
			// Decode the error response and throw an exception.
			$error = json_decode($response->body);
			$message = (isset($error->message)) ? $error->message : 'Error: ' . $response->code;
			throw new \DomainException($message, $response->code);
		}

		return $response->body;
	}