Update Blog List to show title and description instead of complete content
	* added description to several blog posts
	* changed blog list to show description
	* changed title from h1 to h4
	* changed class and element of description to span
Styled header and attempted to style container
	* added color to header that I also want on background
	* attemtped to style body but failed

TODO: color the background same as header and color content white
			add color change hover to each blog post
			fix the navigation menu on small screens (turn into slide in menu)
Merge branch 'master' of https://github.com/jwrobes/jwrobes.github.io