Implemented o-hoverable in stylesheets
Implementing o-layers in nav
Added correct o-layers event to Responsive Nav
Made it plural
Properly implemented o-layers using document.body as context
Changed event names to camelCase
Merge pull request #21 from Financial-Times/hoverable

Implemented o-hoverable in stylesheets
Merge pull request #22 from Financial-Times/layers

Implemented o-layers in Nav
Fixed merge conflicts