Add more information, correct some spell error.

README.md

@@ -3,32 +3,36 @@ 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;
+The include folder, which I call it normal edition or standard edition relative to compatible edition
+contains all the library's codes;
+All other folders except compatible_edition are demos:
 
-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_server:
+Demonstrate how to implement tcp servers, it cantains two servers, one is the simplest 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.
+asio_client:
+Demonstrate how to implement tcp client, 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:
+Used to test the server(echo server)'s performance.
 
-test_client is a demo, which is used to test the server's performance(need to connect to the echo server).
+file_server file_client:
+A file transfer service. At client, use 'get <file name1> [file name2] [...]' to fetch files.
 
-udp_client is a demo, which demonstrate how to implement upd communication.
+udp_client:
+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.
+Normal edition need vc2010 or higher, or gcc4.6 or higher;
+Compatible edition does not have the limition as normal edition does, only need you to compile boost successfully.
 
 Boost requirement:
-1.49 or highter, early edition maybe work, but I'm not certain.
+1.49 or highter, early edition maybe work, but I'm not sure.
 
 Debug environment:
 Win7 64bit
 Ubuntu 12.10 32bit
 Ubuntu 12.10 64bit
 Fedora 18 64bit
-