Merge pull request webpack-contrib#91 from ben-eb/patch-89

Disable unused rule removal & identifier reduction. Fixes webpack-contrib#89.

Author: markdalgleish

lib/processCss.js

@@ -161,7 +161,9 @@ module.exports = function processCss(inputSource, inputMap, options) {
 	if(minimize) {
 		pipeline.use(cssnano({
 			zindex: false,
-			urls: false
+			urls: false,
+			unused: false,
+			idents: false
 		}));
 	}