Bump sass, bourbon

- Closes #157
Silence warnings

- Closes #148
Bump version to 1.6.0.pre2
Bump version to 1.6.0
Add IRC info in README
Add version notice
Change wording
Update Badges
Fix link on IRC badge
Update version on main scss file
Refactor is-even & belongs-to functions

- Closes #171
Remove deprecated webkit gradient
Add FAQ section in the README
Fix typo in README
Use flat badge icons
Move clearfix to only apply to display:block rows

- Closes #193
Add travis config
Add travis badge
Silence rspec deprecation warnings
Move separator in README