Update install example to use babel-preset-env.

Author: jdalton

.babelrc

@@ -4,10 +4,6 @@
     "lodash"
   ],
   "presets": [
-    ["env", {
-      "targets": {
-        "node": 4
-      }
-    }]
+    ["env", { "targets": { "node": 4 } }]
   ]
 }

README.md

@@ -9,7 +9,7 @@ for even smaller cherry-picked builds!
 
 ```shell
 $ npm i --save lodash
-$ npm i --save-dev babel-plugin-lodash babel-cli babel-preset-es2015
+$ npm i --save-dev babel-plugin-lodash babel-cli babel-preset-env
 ```
 
 ## Example
@@ -46,15 +46,15 @@ Set plugin options using an array of `[pluginName, optionsObject]`.
 ```json
 {
   "plugins": [["lodash", { "id": "lodash-compat", "cwd": "some/path" }]],
-  "presets": ["es2015"]
+  "presets": [["env", { "targets": { "node": 4 } }]]
 }
 ```
 
 The `options.id` can be an array of ids.
 ```json
 {
   "plugins": [["lodash", { "id": ["async", "lodash-bound"] }]],
-  "presets": ["es2015"]
+  "presets": [["env", { "targets": { "node": 4 } }]]
 }
 ```
 
@@ -67,7 +67,7 @@ $ babel --plugins lodash --presets es2015 script.js
 ```js
 require('babel-core').transform('code', {
   'plugins': ['lodash'],
-  'presets': ['es2015']
+  'presets': [['env', { 'targets': { 'node': 4 } }]]
 });
 ```
 
@@ -80,7 +80,7 @@ require('babel-core').transform('code', {
     'exclude': /node_modules/,
     'query': {
       'plugins': ['lodash'],
-      'presets': ['es2015']
+      'presets': [['env', { 'targets': { 'node': 4 } }]]
     }
   }]
 }

package.json

@@ -27,7 +27,6 @@
     "babel-plugin-transform-object-rest-spread": "^6.23.0",
     "babel-plugin-transform-runtime": "^6.15.0",
     "babel-preset-env": "^1.2.1",
-    "babel-preset-es2015": "^6.18.0",
     "babel-preset-react": "^6.16.0",
     "babel-preset-stage-0": "^6.16.0",
     "babel-register": "^6.23.0",

test/.babelrc

@@ -1,5 +1,5 @@
 {
   "presets": [
-    "es2015"
+    ["env", { "targets": { "node": 4 } }]
   ]
 }

test/mixed-fixtures/async-bound-ramda/.babelrc

@@ -1,6 +1,6 @@
 {
   "presets": [
-    "es2015",
+    ["env", { "targets": { "node": 4 } }],
     "stage-0"
   ]
 }

test/mixed-fixtures/object-rest-spread/.babelrc

@@ -3,6 +3,6 @@
     "transform-object-rest-spread"
   ],
   "presets": [
-    "es2015"
+    ["env", { "targets": { "node": 4 } }]
   ]
 }

test/mixed-fixtures/react-bootstrap/.babelrc

@@ -1,6 +1,6 @@
 {
   "presets": [
-    "es2015",
+    ["env", { "targets": { "node": 4 } }],
     "react"
   ]
 }

test/mixed-fixtures/syntax-flow/.babelrc

@@ -3,6 +3,6 @@
     "syntax-flow"
   ],
   "presets": [
-    "es2015"
+    ["env", { "targets": { "node": 4 } }]
   ]
 }

test/mixed-fixtures/syntax-jsx/.babelrc

@@ -3,6 +3,6 @@
     "syntax-jsx"
   ],
   "presets": [
-    "es2015"
+    ["env", { "targets": { "node": 4 } }]
   ]
 }

test/parsing-fixtures/wildcard-exports/.babelrc

@@ -1,6 +1,6 @@
 {
   "presets": [
-    "es2015"
+    ["env", { "targets": { "node": 4 } }]
   ],
   "plugins": [
     "transform-runtime"