Add Section 18.10 - No spaces inside brackets

See airbnb#593

Author: pigoz

README.md

@@ -1575,6 +1575,18 @@ Other Style Guides
     }
     ```
 
+  - [18.10](#18.10) <a name='18.10'></a> Do not add spaces inside brackets.
+
+    ```javascript
+    // bad
+    const foo = [ 1, 2, 3 ];
+    console.log(foo[ 0 ]);
+
+    // good
+    const foo = [1, 2, 3];
+    console.log(foo[0]);
+    ```
+
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 ## Commas

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

@@ -1,7 +1,7 @@
 module.exports = {
   'rules': {
     // enforce spacing inside array brackets
-    'array-bracket-spacing': 0,
+    'array-bracket-spacing': [2, 'never'],
     // enforce one true brace style
     'brace-style': [2, '1tbs', {'allowSingleLine': true }],
     // require camel case names
@@ -10,8 +10,8 @@ module.exports = {
     'comma-spacing': [2, {'before': false, 'after': true}],
     // enforce one true comma style
     'comma-style': [2, 'last'],
-    // require or disallow padding inside computed properties
-    'computed-property-spacing': 0,
+    // disallow padding inside computed properties
+    'computed-property-spacing': [2, 'never'],
     // enforces consistent naming when capturing the current execution context
     'consistent-this': 0,
     // enforce newline at the end of file, with no multiple empty lines