Make section numbering consistent

* Renumber items where numbers were skipped

Author: Randall Reed, Jr

README.md

@@ -155,7 +155,7 @@ Other Style Guides
     ```
 
   <a name="es6-computed-properties"></a><a name="3.4"></a>
-  - [3.4](#es6-computed-properties) Use computed property names when creating objects with dynamic property names.
+  - [3.2](#es6-computed-properties) Use computed property names when creating objects with dynamic property names.
 
     > Why? They allow you to define all the properties of an object in one place.
 
@@ -181,7 +181,7 @@ Other Style Guides
     ```
 
   <a name="es6-object-shorthand"></a><a name="3.5"></a>
-  - [3.5](#es6-object-shorthand) Use object method shorthand. eslint: [`object-shorthand`](http://eslint.org/docs/rules/object-shorthand.html) jscs: [`requireEnhancedObjectLiterals`](http://jscs.info/rule/requireEnhancedObjectLiterals)
+  - [3.3](#es6-object-shorthand) Use object method shorthand. eslint: [`object-shorthand`](http://eslint.org/docs/rules/object-shorthand.html) jscs: [`requireEnhancedObjectLiterals`](http://jscs.info/rule/requireEnhancedObjectLiterals)
 
     ```javascript
     // bad
@@ -204,7 +204,7 @@ Other Style Guides
     ```
 
   <a name="es6-object-concise"></a><a name="3.6"></a>
-  - [3.6](#es6-object-concise) Use property value shorthand. eslint: [`object-shorthand`](http://eslint.org/docs/rules/object-shorthand.html) jscs: [`requireEnhancedObjectLiterals`](http://jscs.info/rule/requireEnhancedObjectLiterals)
+  - [3.4](#es6-object-concise) Use property value shorthand. eslint: [`object-shorthand`](http://eslint.org/docs/rules/object-shorthand.html) jscs: [`requireEnhancedObjectLiterals`](http://jscs.info/rule/requireEnhancedObjectLiterals)
 
     > Why? It is shorter to write and descriptive.
 
@@ -223,7 +223,7 @@ Other Style Guides
     ```
 
   <a name="objects--grouped-shorthand"></a><a name="3.7"></a>
-  - [3.7](#objects--grouped-shorthand) Group your shorthand properties at the beginning of your object declaration.
+  - [3.5](#objects--grouped-shorthand) Group your shorthand properties at the beginning of your object declaration.
 
     > Why? It's easier to tell which properties are using the shorthand.
 
@@ -253,7 +253,7 @@ Other Style Guides
     ```
 
   <a name="objects--quoted-props"></a><a name="3.8"></a>
-  - [3.8](#objects--quoted-props) Only quote properties that are invalid identifiers. eslint: [`quote-props`](http://eslint.org/docs/rules/quote-props.html) jscs: [`disallowQuotedKeysInObjects`](http://jscs.info/rule/disallowQuotedKeysInObjects)
+  - [3.6](#objects--quoted-props) Only quote properties that are invalid identifiers. eslint: [`quote-props`](http://eslint.org/docs/rules/quote-props.html) jscs: [`disallowQuotedKeysInObjects`](http://jscs.info/rule/disallowQuotedKeysInObjects)
 
   > Why? In general we consider it subjectively easier to read. It improves syntax highlighting, and is also more easily optimized by many JS engines.
 
@@ -274,7 +274,7 @@ Other Style Guides
   ```
 
   <a name="objects--prototype-builtins"></a>
-  - [3.9](#objects--prototype-builtins) Do not call `Object.prototype` methods directly, such as `hasOwnProperty`, `propertyIsEnumerable`, and `isPrototypeOf`.
+  - [3.7](#objects--prototype-builtins) Do not call `Object.prototype` methods directly, such as `hasOwnProperty`, `propertyIsEnumerable`, and `isPrototypeOf`.
 
   > Why? These methods may be shadowed by properties on the object in question - consider `{ hasOwnProperty: false }` - or, the object may be a null object (`Object.create(null)`).
 
@@ -294,7 +294,7 @@ Other Style Guides
   ```
 
   <a name="objects--rest-spread"></a>
-  - [3.10](#objects--rest-spread) Prefer the object spread operator over `Object.assign` to shallow-copy objects. Use the object rest operator to get a new object with certain properties omitted.
+  - [3.8](#objects--rest-spread) Prefer the object spread operator over `Object.assign` to shallow-copy objects. Use the object rest operator to get a new object with certain properties omitted.
 
   ```javascript
   // very bad
@@ -525,7 +525,7 @@ Other Style Guides
     ```
 
   <a name="es6-template-literals"></a><a name="6.4"></a>
-  - [6.4](#es6-template-literals) When programmatically building up strings, use template strings instead of concatenation. eslint: [`prefer-template`](http://eslint.org/docs/rules/prefer-template.html) [`template-curly-spacing`](http://eslint.org/docs/rules/template-curly-spacing) jscs: [`requireTemplateStrings`](http://jscs.info/rule/requireTemplateStrings)
+  - [6.3](#es6-template-literals) When programmatically building up strings, use template strings instead of concatenation. eslint: [`prefer-template`](http://eslint.org/docs/rules/prefer-template.html) [`template-curly-spacing`](http://eslint.org/docs/rules/template-curly-spacing) jscs: [`requireTemplateStrings`](http://jscs.info/rule/requireTemplateStrings)
 
     > Why? Template strings give you a readable, concise syntax with proper newlines and string interpolation features.
 
@@ -552,10 +552,10 @@ Other Style Guides
     ```
 
   <a name="strings--eval"></a><a name="6.5"></a>
-  - [6.5](#strings--eval) Never use `eval()` on a string, it opens too many vulnerabilities.
+  - [6.4](#strings--eval) Never use `eval()` on a string, it opens too many vulnerabilities.
 
   <a name="strings--escaping"></a>
-  - [6.6](#strings--escaping) Do not unnecessarily escape characters in strings. eslint: [`no-useless-escape`](http://eslint.org/docs/rules/no-useless-escape)
+  - [6.5](#strings--escaping) Do not unnecessarily escape characters in strings. eslint: [`no-useless-escape`](http://eslint.org/docs/rules/no-useless-escape)
 
     > Why? Backslashes harm readability, thus they should only be present when necessary.