add eslint, support node>=6.0.0, update document, fix minor bugs

.eslintrc.js

@@ -0,0 +1,10 @@
+module.exports = {
+    "extends": "standard",
+    "env": {
+        "node": true,
+        "mocha": true
+    },
+    "rules": {
+        "new-cap": ["error", { "properties": false }]
+    }
+};

.travis.yml

@@ -1,14 +1,15 @@
 sudo: false
 language: node_js
 node_js:
-  - "0.8"
-  - "0.10"
-  - "0.12"
-  - "4"
+  #- "0.8"
+  #- "0.10"
+  #- "0.12"
+  #- "4.4"
   - "6"
+  - "8"
 
 before_install:
-  - travis_retry npm install -g npm@2.14.5
+  #- travis_retry npm install -g npm@v3.2.0
   - travis_retry npm install
 
 script:

README.md

@@ -1,5 +1,6 @@
 # IP  
-[![](https://badge.fury.io/js/ip.svg)](https://www.npmjs.com/package/ip)  
+[![](https://badge.fury.io/js/ip.svg)](https://www.npmjs.com/package/ip)  [![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](http://standardjs.com)
+
 
 IP address utilities for node.js
 
@@ -22,8 +23,22 @@ Get your ip address, compare ip addresses, validate ip addresses, etc.
 ```js
 var ip = require('ip');
 
+/**
+ *  @param {string} name **Optional** {'public'|'private'},
+ *   Name or security of the network interface like "Docket" | "Wi-Fi",
+ *   if neme set `undefined` return first address of the interface with `ipv4` or loopback address,
+ *   if name set `public` return first public ip address,
+ *   or if name set `private` return first public ip address.
+ *  @param   {string} family **Optional** {ipv4|ipv6}  IP family of the address (defaults: ipv4).
+ *  @returns {string} Returns the address for the network interface on the current system.
+ */
 ip.address() // my ip address
-ip.isEqual('::1', '::0:1'); // true
+ip.address('Wi-Fi') // Obtain Wi-Fi IPV4 address
+ip.address('vEthernet (DockerNAT)') // Obtain DocketNAt IPV4 address
+ip.address('private') // Obtain private IPV4 address
+ip.address('public','ipv6') // Obtain public IPV6 address
+
+ip.isEqual('::1', '::0:1') // true
 ip.toBuffer('127.0.0.1') // Buffer([127, 0, 0, 1])
 ip.toString(new Buffer([127, 0, 0, 1])) // 127.0.0.1
 ip.fromPrefixLen(24) // 255.255.255.0
@@ -33,7 +48,7 @@ ip.not('255.255.255.0') // 0.0.0.255
 ip.or('192.168.1.134', '0.0.0.255') // 192.168.1.255
 ip.isPrivate('127.0.0.1') // true
 ip.isV4Format('127.0.0.1'); // true
-ip.isV6Format('::ffff:127.0.0.1'); // true
+ip.isV6Format('::ffff:127.0.0.1') // true
 
 // operate on buffers in-place
 var buf = new Buffer(128);
@@ -60,10 +75,10 @@ ip.cidrSubnet('192.168.1.134/26').contains('192.168.1.190') // true
 
 
 // ipv4 long conversion
-ip.toLong('127.0.0.1'); // 2130706433
-ip.fromLong(2130706433); // '127.0.0.1'
+ip.toLong('127.0.0.1') // 2130706433
+ip.fromLong(2130706433) // '127.0.0.1'
 ```
-
+[![js-standard-style](https://cdn.rawgit.com/standard/standard/master/badge.svg)](http://standardjs.com)
 ### License
 
 This software is licensed under the MIT License.