Run gulp dist test on publish *only* (not on npm install)

Author: Andy Wermke

package.json

@@ -18,7 +18,7 @@
   "scripts": {
     "build": "gulp dist",
     "test": "gulp test",
-    "prepublish": "gulp dist test"
+    "prepublishOnly": "gulp dist test"
   },
   "repository": "andywer/thread.js",
   "bugs": {