add some develop guide

Author: CppCXY

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 # 0.3.3 (unreleased)
 
+`NEW` Add Develop Guide
+
 `NEW` support `workspace/didChangeConfiguration` notification for neovim
 
 # 0.3.2

README.md

@@ -27,6 +27,25 @@ We welcome your feedback and contributions. Please feel free to submit pull requ
 cargo build --release -p emmylua_ls
 ```
 
+## Develop
+
+The language service supports both stdio and TCP communication, with stdio communication as the default. It has several startup parameters:
+- `-c` specifies the communication method. Acceptable values are `stdio` and `tcp`, with the default being `stdio`.
+- `--port` When the `-c` parameter is set to `tcp`, the `--port` parameter can specify the port number, with the default value of `5007`.
+- `--log-level` specifies the log level. Acceptable values are `debug`, `info`, `warn`, `error`, with the default being `info`.
+- `--log-path` specifies the directory path for the log files.
+
+For example:
+
+```shell
+emmylua_ls -c tcp --port 5007 --log-level debug
+# Without parameters, it uses stdio communication
+emmylua_ls
+```
+
+However, having only the executable is not enough. It needs to load some resource files, which are located in the project's `resources` directory. By default, it will first look for the `resources` directory in the current directory or its parent directories. Alternatively, you can specify the path to the resources directory through the `EMMYLUA_LS_RESOURCES` environment variable.
+
+
 ## License
 
 [MIT](./LICENSE)