Add more xmlns headers to generated XML
Fix issues when the `siteRoot` and and `URL` don't have slashes.
Handle the `siteRoot: './'` case too.
README.md: Add badges.
README.md: Refactor options.
Merge pull request #20 from XhmikosR/readme

Improve README.md
Merge pull request #19 from XhmikosR/T1st3-master

Add more xmlns headers to generated XML
Merge pull request #15 from XhmikosR/issue9

Fix various issues with missing slashes in `url` and/or `siteRoot`