Add CNAME for www.openinfrastructure.co
Add CNAME for www.openinfrastructure.co

Using www.openinfrastructure.co instead of openinfrastructure.co to
take advantage of CDN caching

cacophonyapp/cacophonyapp.github.io,cacophonyapp/cacophonyapp.github.io,cacophonyapp/cacophonyapp.github.io,cacophonyapp/cacophonyapp.github.io