[eslint config] [breaking] [base] update eslint to v3

- drop support for node 4.

packages/eslint-config-airbnb-base/package.json

@@ -46,14 +46,17 @@
   "homepage": "https://github.com/airbnb/javascript",
   "devDependencies": {
     "babel-tape-runner": "^1.3.1",
-    "eslint": "^2.13.1",
+    "eslint": "^3.0.1",
     "eslint-find-rules": "^1.11.0",
     "eslint-plugin-import": "^1.10.2",
     "tape": "^4.6.0",
     "in-publish": "^2.0.0"
   },
   "peerDependencies": {
-    "eslint": "^2.13.1",
+    "eslint": "^3.0.1",
     "eslint-plugin-import": "^1.10.2"
+  },
+  "engines": {
+    "node": ">= 4"
   }
 }

packages/eslint-config-airbnb-base/rules/style.js

@@ -47,7 +47,7 @@ module.exports = {
 
     // this option sets a specific tab width for your code
     // http://eslint.org/docs/rules/indent
-    indent: [2, 2, { SwitchCase: 1, VariableDeclarator: 1 }],
+    indent: [2, 2, { SwitchCase: 1, VariableDeclarator: 1, outerIIFEBody: 1 }],
 
     // specify whether double or single quotes should be used in JSX attributes
     // http://eslint.org/docs/rules/jsx-quotes