Merge pull request #29 from CondeNast/omniture

omniture update event40 to pass a value
Default excerpt fix

When an explicit excerpt was missing, nothing would show up in the meta
tags since the default excerpt filter relies on loop dependent function
calls. I’ve abstracted these into the header.
new lexus requirements, yay
Merge pull request #30 from CondeNast/lexus

new lexus requirements, yay
omniture event40 fix