Add Traceur dependency and use System.import.
Merge pull request #17 from arv/traceur-use-local

Add Traceur dependency and use System.import.
Put together some scaffolding using mocha/chai.
Merge pull request #18 from dglazkov/mocha

Put together some scaffolding using mocha/chai.
Add blockquote and CustomHTMLQuoteElement
Merge pull request #20 from arv/blockquote

Add blockquote and CustomHTMLQuoteElement
Implement span.
Merge pull request #21 from dglazkov/span

Implement span.