Fixed the Type casting Error in send() ,socket.c

README.md

@@ -1,6 +1,6 @@
 #ioLibrary Driver
 The ioLibrary means “Internet Offload Library” for WIZnet chip. It includes drivers and application protocols. 
-The driver (ioLibrary) can be used for [W5500](http://wizwiki.net/wiki/doku.php?id=products:w5500:start) application designs. These will be updated continuously.
+The driver (ioLibrary) can be used for the application design of WIZnet TCP/IP chips as [W5500](http://wizwiki.net/wiki/doku.php?id=products:w5500:start), W5200, W5100 and etc.
 
 ##ioLibrary
 This driver provides the Berkeley Socket type APIs.
@@ -16,6 +16,17 @@ This driver provides the Berkeley Socket type APIs.
 
 ## How to add an ioLibrary in project through github site.
   - Example, refer to https://www.youtube.com/watch?v=mt815RBGdsA
+  - [ioLibrary Doxygen doument](https://github.com/Wiznet/ioLibrary_Driver/blob/master/Ethernet/SOCKET_APIs_V2.0.chm) : Refer to **TODO** in this document
+    - Define what chip is used in **wizchip_conf.h**
+    - Define what Host I/F mode is used in **wizchip_conf.h**
 
 ## Revision History
-Last release : Nov. 2014
+  * Type casting error Fixed : 09, April. 2015
+    In socket.c, send() : Refer to M20150409
+  * ioLibrary V2.0 released : April. 2015
+    * Added to W5100, W5200
+    * Correct to some typing error
+    * Fixed the warning of type casting.
+  
+  * Last release : Nov. 2014
+