Add documentation how to run the signer client

README.md

@@ -18,10 +18,39 @@ Read the documentation of these tools, to find out how to use them.
 
 ## Building the binary
 
-There is a `Makefile` to build the signerclient binary. Run
+There is a `Makefile` to build the `signerclient` binary. Run
 
 ```shell
 make
 ```
 
 to run linting, tests and binary builds.
+
+## Running the signer client
+
+The signer client requires a YAML configuration file to know some information about its runtime environment. The
+default configuration file name is `config.yaml` in the working directory.
+
+### Generating a configuration file
+
+Example configuration data is generated when the client is run with the `-generate-config` command line argument:
+
+```shell
+./signerclient -generate-config
+```
+
+### Start the client
+
+With `config.yaml` in the current directory you can start the client:
+
+```shell
+./signerclient
+```
+
+### Supported command line arguments
+
+To get a list of supported command line arguments run:
+
+```shell
+./signerclient -help
+```