Reverted back to minifier

Author: ghosh

microtip.min.css

@@ -10,7 +10,7 @@
     "1kb"
   ],
   "scripts": {
-    "minify": "cleancss -o microtip.min.css microtip.css",
+    "minify": "minify microtip.css",
     "test": "stylelint microtip.css"
   },
   "author": "Indrashish Ghosh",
@@ -20,7 +20,7 @@
     "url": "https://github.com/ghosh/microtip/issues"
   },
   "devDependencies": {
-    "clean-css-cli": "^4.1.3",
+    "minifier": "^0.8.1",
     "stylelint": "^7.10.1"
   },
   "main": "index.js"