deps: upgrade antd-md-loader

package.json

@@ -70,7 +70,7 @@
     "warning": "~2.1.0"
   },
   "devDependencies": {
-    "antd-md-loader": "0.1.0-beta.14",
+    "antd-md-loader": "0.1.0-beta.15",
     "atool-build": "^0.5.0",
     "autoprefixer": "^6.3.3",
     "babel-cli": "^6.2.0",