Simplified how wrapped body styles are defined.
Now more DRY, and more consistent with how other placeholders/classes are defined.
Suppressed font-face include for wrapped body styles when in silent mode.
Updated to o-fonts 0.6.1 - resolves problem of duplicate @font-face declarations.
Further simplification of wrapped body styles.
Removed font include from wrapped style mixins.
Updated documentation.
Merge pull request #5 from Financial-Times/wrapped-styles-simplification

Simplified how wrapped body styles are defined.