Add ES6 methods to sort-comp default configuration (fixes #97, fixes #122)

Author: yannickcr

docs/rules/sort-comp.md

@@ -6,9 +6,10 @@ When creating React components it is more convenient to always follow the same o
 
 With default configuration the following organisation must be followed:
 
-  1. lifecycle methods: `displayName`, `propTypes`, `contextTypes`, `childContextTypes`, `mixins`, `statics`, `getDefaultProps`, `getInitialState`, `getChildContext`, `componentWillMount`, `componentDidMount`, `componentWillReceiveProps`, `shouldComponentUpdate`, `componentWillUpdate`, `componentDidUpdate`, `componentWillUnmount` (in this order).
-  2. custom methods
-  3. `render` method
+  1. `constructor` method
+  2. lifecycle methods: `displayName`, `propTypes`, `contextTypes`, `childContextTypes`, `mixins`, `statics`,`defaultProps`, `getDefaultProps`, `getInitialState`, `getChildContext`, `componentWillMount`, `componentDidMount`, `componentWillReceiveProps`, `shouldComponentUpdate`, `componentWillUpdate`, `componentDidUpdate`, `componentWillUnmount` (in this order).
+  3. custom methods
+  4. `render` method
 
 The following patterns are considered warnings:
 
@@ -51,6 +52,7 @@ The default configuration is:
 ```js
 {
   order: [
+    'constructor',
     'lifecycle',
     'everything-else',
     'render'
@@ -63,6 +65,7 @@ The default configuration is:
       'childContextTypes',
       'mixins',
       'statics',
+      'defaultProps',
       'getDefaultProps',
       'getInitialState',
       'getChildContext',
@@ -78,6 +81,7 @@ The default configuration is:
 }
 ```
 
+* `constructor` is refering to the `constructor` method.
 * `lifecycle` is refering to the `lifecycle` group defined in `groups`.
 * `everything-else` is a special group that match all the methods that do not match any of the other groups.
 * `render` is refering to the `render` method.
@@ -89,6 +93,7 @@ For example, if you want to place your event handlers (`onClick`, `onSubmit`, et
 ```js
 "react/sort-comp": [1, {
   order: [
+    'constructor',
     'lifecycle',
     '/^on.+$/',
     'render',
@@ -124,6 +129,7 @@ If you want to split your `render` method into smaller ones and keep them just b
 ```js
 "react/sort-comp": [1, {
   order: [
+    'constructor',
     'lifecycle',
     'everything-else',
     'rendering',

lib/rules/sort-comp.js

@@ -48,6 +48,7 @@ module.exports = function(context) {
 
   var methodsOrder = getMethodsOrder({
     order: [
+      'constructor',
       'lifecycle',
       'everything-else',
       'render'
@@ -60,6 +61,7 @@ module.exports = function(context) {
         'childContextTypes',
         'mixins',
         'statics',
+        'defaultProps',
         'getDefaultProps',
         'getInitialState',
         'getChildContext',