updated readme

README.md

@@ -14,6 +14,50 @@ Build with [Cargo](http://doc.crates.io):
 cargo build
 ```
 
+Then `sslocal` and `ssserver` will appear in `./target`, it works similarly as the two binaries of
+the official shadowsocks' implementation.
+
+```
+Usage: ./target/sslocal [options]
+
+Options:
+    -v --version        print version
+    -h --help           print this message
+    -c --config config.json
+                        specify config file
+    -s --server-addr    server address
+    -b --local-addr     local address, listen only to this address if
+                        specified
+    -k --password       password
+    -p --server-port    server port
+    -l --local-port     local socks5 proxy port
+    -m --encrypt-method aes-128-cfb
+                        entryption method
+```
+
+```
+Usage: ./target/ssserver [options]
+
+Options:
+    -v --version        print version
+    -h --help           print this message
+    -c --config config.json
+                        specify config file
+    -s --server-addr    server address
+    -b --local-addr     local address, listen only to this address if
+                        specified
+    -k --password       password
+    -p --server-port    server port
+    -l --local-port     local socks5 proxy port
+    -m --encrypt-method aes-128-cfb
+                        entryption method
+```
+
 ## Notes
 
 Still under developing and waiting for the final release of rust-1.0.
+
+Currently implementation can only be built by rust-0.12-dev. It supports the following features:
+
+* CONNECT command
+* AES-(128|256|512)-CFB crypto algorithm