escape some text may contain xml special char <&>

[GHolk]

your code may encounter this warning:
https://stackoverflow.com/questions/17027043/unterminated-entity-reference-in-php
so I escape title, author and description in entry.

for example in this gamer home:
https://home.gamer.com.tw/creation.php?owner=mitsueyn ,
it contain & in article title, and your code would produce incorrect rss.

you can test with following command:

php -r '
include("vendor/autoload.php");
function userRss($owner, $maxPage) {
    $GamerHomeCreation = new wsmwason\gamer\GamerHomeCreation($owner);
    $GamerHomeCreation->setOwner($owner);
    $GamerHomeCreation->setMaxCrawlPage($maxPage);
    return $GamerHomeCreation->asXml();
}

$owner = $argv[1];
userRss($owner, 1);
' mitsueyn