Use the simpler license property.

Author: XhmikosR

package.json

@@ -14,12 +14,10 @@
   "bugs": {
     "url": "https://github.com/stubbornella/csslint/issues"
   },
-  "licenses": [
-    {
-      "type": "MIT",
-      "url": "https://github.com/stubbornella/csslint/blob/master/LICENSE"
-    }
-  ],
+  "license": {
+    "type": "MIT",
+    "url": "https://github.com/stubbornella/csslint/blob/master/LICENSE"
+  },
   "main": "./lib/csslint-node.js",
   "bin": {
     "csslint": "./cli.js"