move to prepublishOnly - refs mapbox/node-pre-gyp#291

Author: springmeyer

package.json

@@ -10,7 +10,7 @@
   },
   "scripts": {
     "test": "tape test/*.test.js",
-    "prepublish": "npm ls",
+    "prepublishOnly": "npm ls",
     "install": "node-pre-gyp install --fallback-to-build",
     "docs": "documentation readme src/*.cpp --polyglot --section=API"
   },