Support for Dart syntax highlighting

[myitcv]

Can I confirm, all you need in order to support Dart syntax is support within highlight.js?

What needs to happen then?

[myitcv]

Thanks for an awesome project by the way.

[adam-p]

What needs to happen then?

@isagalaev then needs to a make a new release of highlight.js. Otherwise Mozilla won't approve Markdown Here -- see #21 for excruciating detail.

[adam-p]

Hightlight.js updated in rev 6c8949f. Dart will be supported in the next release.

[myitcv]

Thanks