Mapping to livescience.ecohealthalliance.org

[noamross]

@fakingfantastic I've added a CNAME file that points to livescience.ecohealthalliance.org.

Grabbing header/footer info from the main site has been largely successful (See the current site at ecohealthalliance.github.io/livescience, I do it with the get_eha_site.R script). The only thing that doesn't quite work correctly is the search box, which points to the wrong place when it searches but I'm fairly sure I'll be able to tweak.