Update me, add some demo code

README.md

@@ -7,6 +7,28 @@
 
 ## Example
 
+### Code
+``` Swift
+let baiduPinger = JAPing(hostName: "baidu.com", unexpertError: nil)
+baiduPinger.configuare.pingCount = 8
+baiduPinger.start()
+```
+### Result - See more in example
+```
+PING baidu.com (220.181.57.216)
+64 bytes from 220.181.57.216: icmp_seq=0 time=0.049 ms
+64 bytes from 220.181.57.216: icmp_seq=1 time=0.05 ms
+64 bytes from 220.181.57.216: icmp_seq=2 time=0.048 ms
+64 bytes from 220.181.57.216: icmp_seq=3 time=0.048 ms
+64 bytes from 220.181.57.216: icmp_seq=4 time=0.049 ms
+64 bytes from 220.181.57.216: icmp_seq=5 time=0.055 ms
+64 bytes from 220.181.57.216: icmp_seq=6 time=0.048 ms
+64 bytes from 220.181.57.216: icmp_seq=7 time=0.055 ms
+--- baidu.com ping statistics ---
+8 packets transmitted, 8 packets received, 0% packet loss
+round-trip min/avg/max/stddev = 0.048/0.05/0.055/0.003 ms
+```
+
 To run the example project, clone the repo, and run `pod install` from the Example directory first.
 
 ## Requirements