Update index.html

First draft of a landing page.
Test edit. Commented out download link. 

I've commented out the download link. May not need to feature it so prominently. This is also a test so I can see what happens when I edit this.
Updated some links
Updated links.
Merge remote-tracking branch 'origin/meshrdf' into meshrdf-david

Conflicts:
	web-ui/src/main/webapp/index.html
Merge branch 'meshrdf-david' of https://github.com/HHS/lodestar into meshrdf-david
Removed css for centering
removing centering from style.css
Merge pull request #6 from HHS/meshrdf-david

Meshrdf david