Create README.md

README.md

+st_asio_wrapper
+===============
+
+Asynchronous c/s network framework; Based on Boost.Asio; Very efficient.
+
+The include folder(I call it normal edition) contains all the library's codes;
+
+asio_server is a demo, which demonstrate how to implement tcp server using st_asio_wrapper, it cantains two servers,
+one is the simplist server, which just send data from keyboard, and receive data from socket; one is echo server,
+which send every received data back.
+
+asio_client is a demo, which demonstrate how to implement tcp client using st_asio_wrapper, it simply send data
+from keyboard to the server.
+
+file_server is a demo, which supply file transfer service.
+file_client is a demo, which supply file transfer service; use 'get <file name>' to fetch files.
+
+test_client is a demo, which is used to test the server's performance(need to connect to the echo server).
+
+udp_client is a demo, which demonstrate how to implement upd communication.
+
+Compiler requirement:
+Normal edition need vc2010 or higher, and gcc4.6 or higher;
+Compatible edition does not have the limition of normal edition, only need you compile boost successfully.
+
+Boost requirement:
+1.50 or highter, early edition maybe work, but I'm not certain.