Add back fp build-modules files.

package.json

@@ -29,6 +29,7 @@
   },
   "scripts": {
     "build": "node lib/main/build-dist.js && node lib/fp/build-dist.js",
+    "build-fp": "node lib/fp/build-modules.js",
     "style": "jscs lodash.js lib/**/*.js",
     "test": "npm run build && node test/test && node test/test-fp"
   }