Add 'repository' field to package.json
Update build tools
Update variables syntax
3.2.0
Fix code comment

Fix #12
Fix Firefox/IE default `button` focus styles

Adding `background:transparent` to `button` causes it to lose focus
styles in Firefox and IE. This patch adds a sensible default focus style
to those browsers, while preserving the default focus styles in Chrome.
Fix package.json repository url
Add new preprocessor build tools
3.3.0
Merge branch 'master' into gh-pages
Commit build