Only outputs data if entered.
Adds group class to output for styling.
Changes recipe title to be an `h3` instead of an `h4`.

Sections within the recipe will remain as `h4`'s.
Updates Grunt tasks.
Adds printing capabilities.
Adds recipe styles.
Adds print styles.
Replaces simple print styles with more advanced JavaScript solution.

This is to avoid printing too many pages since `visibility` still takes up layout space.
Removes unnecessary separate print styles.

Switches to using print media style.
Adds styles to initialization.
Adds automatic Pinterest Pin It shortcode output to recipe.
Bumps version for release.