Merge pull request #1 from guyjin/master

new files added.
fixing up menu.  More clean up.  In class work.
Outline of topics covered in the HTML/CSS class.
Merge branch 'master' of https://github.com/guyjin/htmlClass
added <dt> <dd> tag styles.
Finished HTML section, added to CSS notes..
converted .md version of Targets file to pdf.
moved Colors to CSS section, added multiple bg link, added Effects section to CSS
New practice files.  Flex layout experiements and CSS based baseball diamond.
sample images and one page build for layout exercises.
added media queries and ARIA links.
added web fonts
Merge branch 'master' of https://github.com/guyjin/htmlClass
Merge branch 'master' of https://github.com/EBHeadrick/htmlClass

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trying to get flex to work for holy grail layout.
Moved diamond to it's own directory and added webfonts.  Moved css to its own file as well.  Started laying out the new Ranking app.
demo of building more complicated widgets and layouts.