Update README

README.md

@@ -21,7 +21,7 @@ _IkaGo is currently under development and may not suitable for production._
 
 ## Dependencies
 
-1. pcap like [Npcap](http://www.npcap.org/) or WinPcap in Windows, and libpcap in macOS or Linux.
+1. pcap like [Npcap](http://www.npcap.org/) or WinPcap in Windows, libpcap in macOS or Linux.
 
 ## Usage
 
@@ -37,13 +37,13 @@ go run ./cmd/ikago-server -p [port]
 
 `-list-devices`: (Optional, exclusively) List all valid pcap devices in current computer.
 
-`-c`: (Optional, exclusively) Configuration file. An example of configuration file is [here](https://github.com/zhxie/ikago/blob/master/configs/config.json).
+`-c`: (Optional, exclusively) Configuration file. An example of configuration file is [here](/configs/config.json).
 
 `-listen-devices devices`: (Optional) pcap devices for listening, use comma to separate multiple devices. If this value is not set, all valid pcap devices will be used. For example, `-listen-devices eth0,wifi0,lo`.
 
 `-upstream-device device`: (Optional) pcap device for routing upstream to. If this value is not set, the first valid pcap device with the same domain of gateway will be used.
 
-`-method method`: (Optional) Method of encryption, can be `plain`, `aes-128-gcm`, `aes-192-gcm`, `aes-256-gcm`, `chacha20-poly1305`, `xchacha20-poly1305`. Default as `plain`.
+`-method method`: (Optional) Method of encryption, can be `plain`, `aes-128-gcm`, `aes-192-gcm`, `aes-256-gcm`, `chacha20-poly1305` or `xchacha20-poly1305`. Default as `plain`.
 
 `-password password`: (Optional) Password of the encryption, must be set only when method is not `plain`.
 
@@ -72,3 +72,7 @@ go run ./cmd/ikago-server -p [port]
 
 - [ ] Retransmission and out of order packets detection
 - [ ] Bypass filters
+
+## License
+
+IkaGo is licensed under [the MIT License](/LICENSE).