Add presentation to site map.

 On branch master

	modified:   app/public/sitemap.xml
Blog post: Why I Love Sports

 On branch master

	new file:   app/public/images/photos/fenway_park_2009.jpg
	modified:   app/public/sitemap.xml
	modified:   content/blogs/kris_walker/index.md
	new file:   content/blogs/kris_walker/why_i_love_sports.md