update README.md

Author: ilsanbao

README.md

@@ -2,22 +2,36 @@
 IPIP.net officially supported IP database ipdb format parsing library
 
 # Installing
+<pre>
 composer install ipip/db
+</pre>
 
 # Example Code
 <pre>
-$db = new ipip\db\Reader('c:\tmp\ipdb\mydata6vipday4.ipdb');
-$loc = $db->find("2001:250:200::");
-$map = $db->findMap("2001:250:200::");
-$obj = $db->findInfo("2001:250:200::");
-var_dump($loc, $map, $obj);
+ 
+ Language Support: CN(中文) / EN (English); 
+
+// 全球 IPv4 地级市精度离线库（China：每周高级版，每日标准版，每日高级版，每日专业版，每日旗舰版）
+$city = new ipip\db\City('c:\work\ipdb\city.ipv4.ipdb');
+var_dump($city->find('118.28.1.1', 'CN'));
+var_dump($city->findMap('118.28.1.1', 'CN'));
+var_dump($city->findInfo('118.28.1.1', 'CN'));
+
+// 中国地区区县级IPv4离线库
+$district = new ipip\db\District('c:\work\ipdb\china_district.ipdb');
+var_dump($district->find('1.12.7.255', 'CN'));
+var_dump($district->findMap('1.12.7.255', 'CN'));
+var_dump($district->findInfo('1.12.7.255', 'CN'));
+
+// IDC IPv4 列表离线库
+$idc = new ipip\db\IDC('c:\work\ipdb\idc_list.ipdb');
+var_dump($idc->find('1.1.1.1', 'CN'));
+var_dump($idc->findMap('1.1.1.1', 'CN'));
+var_dump($idc->findInfo('1.1.1.1', 'CN'));
 
-try
-{
-    var_dump($db->find("255.255.255.1"));
-}
-catch (Exception $e)
-{
-    exit($e->getMessage());
-}
+// 基站IPv4 离线库
+$baseStation = new ipip\db\BaseStation('c:\work\ipdb\base_station.ipdb');
+var_dump($baseStation->find('223.220.221.255', 'CN'));
+var_dump($baseStation->findMap('223.220.221.255', 'CN'));
+var_dump($baseStation->findInfo('223.220.221.255', 'CN'));
 </pre>