Merge pull request #65 from tregagnon/gh-pages

New Progress Bar component
Height of flippable boxes must be fluid - fixes #66
Adding new color variables
Styles for empty boxes
Update placeholder

enable textarea placeholding
Update placeholder

enable textarea placeholding
Possibility to use a textarea in the placeholder component
Right to left text samples
Tetra UI 1.0.32
Possibility to have 1/5 and 5/6 columns in the grid
Adding grid utility classes
Fixing appended button with error styles
Removing text alignment property on default text links
Fixing the JS placeholder component
Adapting typography when in arabic language
New icon share
Tetra UI favicon
Fixing a strange bug on fonts
Appended buttons samples in Right To Left
Mixin for margins used for Right To Left mode