Update meta information on index.html

Summary: Prior to this diff the meta information on the index page was
still reflecting the owner of the template rather than Mark. Note the
information in the following screenshot:

https://drive.google.com/file/d/0B6vYbVKRyOPDR080RV9fT0VfckE

After this fix the information looks like this:

https://drive.google.com/file/d/0B6vYbVKRyOPDOXBKUjRSb09sdUU

Test Plan: Generate the site and inspect the meta information at the
top level, twitter, and facebook and ensure that there is no mention of
the owner of the template.
Merge pull request #3 from gmoeck/update-meta-information-on-index

Update meta information on index.html