Add Section 18.11 - Add spaces inside curly braces

Fixes #593

README.md

@@ -1587,6 +1587,16 @@ Other Style Guides
     console.log(foo[0]);
     ```
 
+  - [18.11](#18.11) <a name='18.11'></a> Add spaces inside curly braces.
+
+    ```javascript
+    // bad
+    const foo = {clark: 'kent'};
+
+    // good
+    const foo = { clark: 'kent' };
+    ```
+
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 ## Commas