fix(package): update uncss to version 0.16.2

Closes #6

Author: greenkeeper[bot]

package.json

@@ -24,7 +24,7 @@
   "homepage": "https://github.com/csabapalfi/html-webpack-uncss-plugin",
   "dependencies": {
     "cheerio": "^0.22.0",
-    "uncss": "^0.14.1"
+    "uncss": "^0.16.2"
   },
   "scripts": {
     "test": "mocha"