Adding README.md to master.
Final version changes for v2.0.0 release.
Merge branch 'develop' containing v2.0.0

Conflicts:
	README.md
Generalize tools/publish-doc.sh
Fixing toplevel doc page.
Another change to the doc urls.
Updated to commit v2.0.0-0-g71e969e
Removing doc pages that got commited by mistake.