added new elements to mark content more specifically

ie header, footer, aside elements

updated css code
marking drinks and main with section element
add blog ready baked
added navigation to both blog and index
changed modified header so that we can use it multiple times
add class top to header in index
using the nav element
added video to  the blog section
commented on basic video element attributes
give the video element 3 sources to choose from ie mp4, ogv, webm
provide the type and codec to help the browser play the video.

It can run without them, but it might take a little longer
Merge pull request #11 from wh1pch81n/ch12

Ch12