Merge pull request webpack-contrib#127 from ben-eb/patch-126

Update cssnano options. Fixes webpack-contrib#126.

Author: sokra

lib/processCss.js

@@ -159,7 +159,7 @@ module.exports = function processCss(inputSource, inputMap, options) {
 
 	if(minimize) {
 		var minimizeOptions = Object.create(query);
-		["zindex", "urls", "unused", "idents"].forEach(function(name) {
+		["zindex", "normalizeUrl", "discardUnused", "mergeIdents", "reduceIdents"].forEach(function(name) {
 			if(typeof minimizeOptions[name] === "undefined")
 				minimizeOptions[name] = false;
 		});