fix: 雪碧图bug修复.

Author: cpselvis

package.json

@@ -1,6 +1,6 @@
 {
   "name": "builder-webpack3",
-  "version": "0.3.20",
+  "version": "0.3.21",
   "description": "webpack项目构建器.",
   "main": "lib/index.js",
   "scripts": {
@@ -13,7 +13,7 @@
     "url": "https://github.com/iv-web/builder-webpack"
   },
   "configs": {
-    "compatibleVersion": ">=0.3.18"
+    "compatibleVersion": ">=0.3.21"
   },
   "keywords": [
     "webpack",
@@ -30,6 +30,7 @@
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-react": "^6.24.1",
     "babel-preset-stage-0": "^6.24.1",
+    "builder-webpack-core": "0.0.3",
     "caniuse-db": "^1.0.30000764",
     "clean-webpack-plugin": "^0.1.17",
     "css-loader": "^0.28.7",
@@ -59,4 +60,4 @@
     "husky": "^0.13.1",
     "validate-commit-msg": "^2.11.1"
   }
-}
+}