Revert "Update package.json"

This reverts commit 3f553b6.

Author: seijiakiyama

package.json

@@ -9,13 +9,12 @@
   },
   "files": [
     "bin/",
-    "src/",
+    "lib/",
     "public_html/",
     "views/",
     "LICENSE",
     "PATENTS",
-    "README.md",
-    ".babelrc"
+    "README.md"
   ],
   "license": "BSD-3-Clause",
   "dependencies": {
@@ -74,7 +73,7 @@
     "posttest": "./node_modules/.bin/mongodb-runner stop",
     "coverage": "cross-env COVERAGE_OPTION='./node_modules/babel-istanbul/lib/cli.js cover -x **/spec/**' npm test",
     "start": "node ./bin/parse-server",
-    "postinstall": "npm run build"
+    "prepublish": "npm run build"
   },
   "engines": {
     "node": ">=4.3"