Fixed JS linting issues.
Updated scss-lint config.
Using grunt-scss-lint plugin rather than shell.
Clean up a bit more cleanly.
Update JSHint config, remove some old ignores.
Remove old homepage styles.
Fix linting errors.
Merge pull request #293 from DoSomething/linting

Linting
Update _variables.scss
Remove unused Grunt plugins.
Remove Wercker stuff.
Generate source maps for CSS and JS.
Add time-grunt for pretty stats.
Remove old "example" pages from style guide.
Update scsslint task naming to be consistent with jshint.
Remove mistakenly added require.
Set up hopeful Travis CI task.
Corect hex case & add updated hex to styleguide.
Removing second build from Travis task since it happens in postinstall.
Merge pull request #294 from DoSomething/grunt-cleanup

Grunt cleanup