Add optionalDependencies

gucong3000 · gucong3000 · commit 199f6d7ce706 · 2018-04-15T15:02:52.000+08:00
diff --git a/package.json b/package.json
@@ -32,6 +32,10 @@
     "read-cache": "^1.0.0",
     "yargs": "^11.0.0"
   },
+  "optionalDependencies": {
+    "postcss-less": "^1.1.5",
+    "postcss-scss": "^1.0.0"
+  },
   "devDependencies": {
     "ava": "^0.25.0",
     "coveralls": "^3.0.0",
