live demo

@kylerush 

- creates new layout custom.hbs that allows for multiple containers in template
- creates new page /resources/live-demo-webinar
- styles only for now 

TODO:
- needs to be hooked up to API for calendar
- modal popup for signup - does this functionality exist already?

issue https://github.com/optimizely/marketing-website/issues/17
@kylerush so hipster, instantiating a new Array