chore: update contributors

Author: achingbrain

package.json

@@ -33,5 +33,8 @@
   "dependencies": {
     "callbackify": "^1.1.0",
     "ipns": "~0.1.1"
-  }
+  },
+  "contributors": [
+    "achingbrain <[email protected]>"
+  ]
 }