Handlebars components over helpers + examples

[taeo]

Using components (handlebars partials) is easier and more natural for most designers than writing javascript based helper functions.

This PR:

• Adds notices and dividers components (sass + partial)
• Adds a template that details available components.
• Ignores compiled css in > src/css

[leemunroe]

@taeo This looks awesome btw! Just need some time this week to review and test.

[taeo]

@leemunroe - Right on! Hit me back with any feedback / questions once you've had time to review.

[leemunroe]

I like this direction. I think you're right about it being more natural.

1. Looks like there's an issue in the responsive view for components.html. Didn't get a chance to dig deeper.
2. Noticing some issues in Outlook 2013 and Outlook.com when previewed in Litmus. Most likely a margin issue.
3. Do you want to go ahead and remove src/css/main.css from the repo?
4. Consider removing /helpers and updating the readme.

[taeo]

@leemunroe - Thanks for feedback / suggestions. The first issue was word-break related with the long path in the code tag.

These latest updates should cover all your points. :beers:

[taeo]

:+1: