fix(overrides): wrapped the override as a list

Author: travi

.eslintrc.yml

@@ -1 +1,3 @@
-extends: '@dsmjs'
+extends:
+  - '@dsmjs'
+  - ./index.js

index.js

@@ -1,10 +1,10 @@
 module.exports = {
   extends: '@form8ion/react',
 
-  overrides: {
+  overrides: [{
     files: '.storybook/*.js',
     rules: {
       'import/no-extraneous-dependencies': ['error', {devDependencies: true}]
     }
-  }
+  }]
 };