Adds Webpack support and removes the use for Grunt

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

use scss

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

fix build, add babel, fix annotations

fixes (and improvements !) for baggy

add live reload & environments & eslint & theme fixes

postcss.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  plugins: function () {
+    return [
+      require('autoprefixer'),
+    ];
+  }
+};