Added example, clarified what the parameter is, removed 'undocumented function' warning for ImagickPixel::getColorValue().

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Provided by anonymous 33522 (Danack@basereality.com)

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@331908 c90b9560-bf6c-de11-be94-00142212c4b1
Added example to Imagick::setImageIterations as well as clarified parameter.

-- 
Provided by anonymous 33522 (Danack@basereality.com)

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@331909 c90b9560-bf6c-de11-be94-00142212c4b1