fix: author name

fix: package name

feat: support for PHP ^5.6

Fixes ThePixelDeveloper#59 - The ability to add comments to the output.

Fixes ThePixelDeveloper#59 - The ability to add comments to the output.

Added xmlns to sitemapindex for compliance with google (ThePixelDevel…

…oper#58)

* Added xmlns to sitemapindex for compliance with google
* Update CompleteTest.php
* Update XmlWriterDriver.php

ThePixelDeveloper#53 - wrong sitemap-image namespace (ThePixelDevelop…

…er#54)

* ThePixelDeveloper#53 - wrong sitemap-image namespace

* Update test