Merge pull request #1 from gruntjs/fix-licence-metadata

fix licence metadata

Author: vladikoff

package.json

@@ -14,12 +14,7 @@
   "bugs": {
     "url": "https://github.com/cowboy/node-exit/issues"
   },
-  "licenses": [
-    {
-      "type": "MIT",
-      "url": "https://github.com/cowboy/node-exit/blob/master/LICENSE-MIT"
-    }
-  ],
+  "license": "MIT",
   "main": "lib/exit",
   "engines": {
     "node": ">= 0.8.0"