[eslint config] remove need for a local symlink.

packages/eslint-config-airbnb/.eslintrc

@@ -1,5 +1,5 @@
 {
-  "extends": "airbnb",
+  "extends": "./index.js",
   "rules": {
     // disable requiring trailing commas because it might be nice to revert to
     // being JSON at some point, and I don't want to make big changes now.

packages/eslint-config-airbnb/base.js

@@ -1,7 +1,7 @@
 module.exports = {
   extends: [
-    'eslint-config-airbnb/legacy',
-    'eslint-config-airbnb/rules/es6',
+    './legacy',
+    './rules/es6',
   ].map(require.resolve),
   rules: {}
 };

packages/eslint-config-airbnb/index.js

@@ -1,8 +1,8 @@
 module.exports = {
   extends: [
-    'eslint-config-airbnb/base',
-    'eslint-config-airbnb/rules/strict',
-    'eslint-config-airbnb/rules/react',
+    './base',
+    './rules/strict',
+    './rules/react',
   ].map(require.resolve),
   rules: {}
 };

packages/eslint-config-airbnb/legacy.js

@@ -1,11 +1,11 @@
 module.exports = {
   extends: [
-    'eslint-config-airbnb/rules/best-practices',
-    'eslint-config-airbnb/rules/errors',
-    'eslint-config-airbnb/rules/legacy',
-    'eslint-config-airbnb/rules/node',
-    'eslint-config-airbnb/rules/style',
-    'eslint-config-airbnb/rules/variables'
+    './rules/best-practices',
+    './rules/errors',
+    './rules/legacy',
+    './rules/node',
+    './rules/style',
+    './rules/variables'
   ].map(require.resolve),
   env: {
     browser: true,

packages/eslint-config-airbnb/node_modules/eslint-config-airbnb

@@ -1 +0,0 @@
-..