Add tests to ensure that the baseurl is added to the url.
Add tests to ensure that the baseurl is added to the url.

Ref: #50, #47.

Bootstragram/jekyll-sitemap,kevinoid/jekyll-sitemap,Bootstragram/jekyll-sitemap,jekyll/jekyll-sitemap,Bootstragram/jekyll-sitemap,kevinoid/jekyll-sitemap,jekyll/jekyll-sitemap