fix npm scripts

Author: fuzhenn

package.json

@@ -25,9 +25,9 @@
     "lint": "eslint src/**/*.js test/**/*.js",
     "test": "gulp test --cov",
     "pretest": "npm run lint",
-    "prepublishOnly": "gulp minify",
+    "prepublish": "npm run build",
     "preversion": "npm run lint",
-    "version": "npm run doc && git add -A docs/api",
+    "version": "npm run doc && git add -A docs/api && npm run build",
     "postversion": "gulp zip",
     "doc": "gulp doc",
     "dev": "gulp connect",