fix npm SEO for 'promise polyfill'

bradoyler · web-flow · commit 7266c2999d40 · 2017-04-23T14:00:32.000-04:00
diff --git a/package.json b/package.json
@@ -55,6 +55,8 @@
   },
   "keywords": [
     "promises",
+    "promise",
+    "polyfill",
     "futures"
   ],
   "author": "Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)",
