Made additions to Build Files subsection.
Merge pull request #355 from achalv/readme

Made additions to Build Files subsection.
fix nested bordered table
Remove line-break from Tables test page
Update URLs to point to Yahoo org on GitHub

Closes #366
Merge pull request #371 from ericf/yahoo-org

Update URLs to point to Yahoo org on GitHub
Merge pull request #2 from yahoo/master

Update from origin