Change license back to MIT in package.json

#66 (comment)

Author: jhnns

package.json

@@ -16,7 +16,7 @@
     "cover": "istanbul cover -x *.runtime.js node_modules/mocha/bin/_mocha",
     "publish-patch": "mocha && npm version patch && git push && git push --tags && npm publish"
   },
-  "license": "JSF",
+  "license": "MIT",
   "repository": {
     "type": "git",
     "url": "https://github.com/webpack/loader-utils.git"