use lodash/reduce replace lodash import

Author: someok

Diff for: index.js

@@ -21,7 +21,7 @@ import fs from './fs'
 import getUUID from './utils/uuid'
 import base64 from 'base-64'
 import polyfill from './polyfill'
-import _ from 'lodash'
+import reduce from 'lodash/reduce'
 import android from './android'
 import ios from './ios'
 import JSONStream from './json-stream'
@@ -224,7 +224,7 @@ function fetch(...args:any):Promise {
 
   // # 241 normalize null or undefined headers, in case nil or null string
   // pass to native context
-  headers = _.reduce(headers, (result, value, key) => {
+  headers = reduce(headers, (result, value, key) => {
     result[key] = value || ''
     return result
   }, {});

Diff for: package.json

@@ -8,7 +8,8 @@
   },
   "dependencies": {
     "base-64": "0.1.0",
-    "glob": "7.0.6"
+    "glob": "7.0.6",
+    "lodash": "4.17.15"
   },
   "keywords": [
     "react-native",