Add documentation to README (#29)

Fix typo in click hints

README.md

@@ -1,3 +1,30 @@
 # Neon CLI Client
 This is a lightly modified client from [mycroft-core](https://github.com/MycroftAI/mycroft-core/tree/dev/mycroft/client/text).
-The CLI can be accessed from a terminal via `neon-cli`.
+The CLI can be accessed from a terminal via `neon-cli`.
+
+## CLI Usage
+By default, the CLI will use default parameters to connect to a Neon/Mycroft/OVOS
+Core instance running on the local host. The following arguments may be passed to
+override defaults. This information is also accessible via `neon-cli --help`.
+
+### `--host 0.0.0.0`
+The default `0.0.0.0` may be replaced with a different IP address if connecting
+to a remote core instance. Note that the messagebus carries unencrypted data, so
+enabling remote access is not generally recommended
+
+### `--port 8181`
+The default `8181` may be replaced with a different port if the messagebus service
+was configured to use a non-default port.
+
+### `--lang en-us`
+The language of CLI inputs and expected responses can be set by passing a BCP-47
+language code here.
+
+### `--logs-dir ~/.local/state/neon/`
+The default log directory is read from configuration, but it may be overridden
+here. This is commonly set for Docker connections, where the log path on the host
+is not configured for the CLI client.
+
+### `--simple`
+This flag will enable a simple text-based CLI showing only inputs and responses.
+This can be useful if the default CLI doesn't display properly in a terminal.

neon_cli/cli.py

@@ -37,7 +37,7 @@
 @click.option("--host", "-h", default="0.0.0.0",
               help="Host (IP) Address of the messagebus")
 @click.option("--port", "-p", default=8181,
-              help="Host (IP) Address of the messagebus")
+              help="Port used by the messagebus")
 @click.option("--lang", "-l", default="en-us",
               help="Language of inputs/responses")
 @click.option("--ipc-dir",