Added Moment to Package.json
Added videoScrape plugin

This plugin looks for any files with a videoUrl metadata, and adds them
to the defined collection.
Added new-page plugin and video references to the index page.
Merge branch 'master' of github.com:koding/kdlearn

Conflicts:
	.metalsmith/metal.coffee
	.metalsmith/templates/index.toffee
Limited the number of guides that index loops throught
Added videoid tags