Update ES6 feature page to include io.js 2.x's features

content/en/es6.md

@@ -8,9 +8,9 @@ Version {{project.current_version}} of io.js ships with V8 {{project.current_v8}
 
 On Node.js™@0.12.x (V8 3.28+), the `--harmony` runtime flag enables all **completed**, **staged** and **in progress** ES6 features together, in bulk (with the exception of `proxies` which are hidden under `--harmony-proxies`). This means that some really buggy or even broken features like [Arrow Functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions) are just as readily available for developers as [generators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*), which have very little or even no known-issues. As such, most developers tend to enable only certain features by using specific runtime harmony feature flags (e.g. `--harmony-generators`), or simply enable all of them and then use a restricted subset.
 
-With io.js@1.x (V8 4.1+), all that complexity goes away. All harmony features are now logically split into three groups for **shipping**, **staged** and **in progress** features:
+With io.js (V8 4.1+), all that complexity goes away. All harmony features are now logically split into three groups for **shipping**, **staged** and **in progress** features:
 
-*   All **shipping** features, the ones that V8 has considered stable, like [generators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*), [templates](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/template_strings), [new string methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/ECMAScript_6_support_in_Mozilla#Additions_to_the_String_object) and many others are turned **on by default on io.js** and do **NOT** require any kind of runtime flag.
+*   All **shipping** features, the ones that V8 has considered stable, like [classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),  [generators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*), [templates](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/template_strings), [new string methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/ECMAScript_6_support_in_Mozilla#Additions_to_the_String_object) and many others are turned **on by default on io.js** and do **NOT** require any kind of runtime flag.
 *   Then there are **staged** features which are almost-completed features that haven't been completely tested or updated to the latest spec yet and therefore are not considered stable by the V8 team (e.g. there might be some edge cases left to discover). This is probably the equivalent of the state of [generators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*) on 3.26. These are the "use at your own risk" type of features that now require a runtime flag: `--es_staging` (or its synonym, `--harmony`).
 *   Finally, all **in progress** features can be activated individually by their respective harmony flag (e.g. `--harmony_arrow_functions`), although this is highly discouraged unless for testing purposes.
 
@@ -27,6 +27,8 @@ With io.js@1.x (V8 4.1+), all that complexity goes away. All harmony features ar
 
     >As of v8 3.31.74.1, block-scoped declarations are [intentionally implemented with a non-compliant limitation to strict mode code](https://groups.google.com/forum/#!topic/v8-users/3UXNCkAU8Es). Developers should be aware that this will change as v8 continues towards ES6 specification compliance.
 
+*   [Classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes) (strict mode only)
+
 *   Collections
 
     *   [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map)
@@ -41,6 +43,8 @@ With io.js@1.x (V8 4.1+), all that complexity goes away. All harmony features ar
 
 *   [Binary and Octal literals](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#Numeric_literals)
 
+*   [Object literal extensions](https://github.com/lukehoban/es6features#enhanced-object-literals) (shorthand properties and methods)
+
 *   [Promises](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)
 
 *   [New String methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/ECMAScript_6_support_in_Mozilla#Additions_to_the_String_object)
@@ -53,10 +57,6 @@ You can view a more detailed list, including a comparison with other engines, on
 
 ## Which ES6 features are behind the --es_staging flag?
 
-*   [Classes](https://github.com/lukehoban/es6features#classes) (strict mode only, behind flag `--harmony_classes` which implies block scoping & object literal extensions)
-
-*   [Object literal extensions](https://github.com/lukehoban/es6features#enhanced-object-literals) (behind flag `--harmony_object_literals`)
-
 *   [`Symbol.toStringTag`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol) (user-definable results for `Object.prototype.toString`, behind flag `--harmony_tostring`)
 
 ## Which ES6 features are in progress?