readme update + global log_level is not fetched from "log_level" inst…

…ead of "logging/log_level"

README.md

@@ -11,11 +11,39 @@ Start a server in a terminal:
 
 	$ cometpsd -k xyz
 
-Open [http://localhost:8080/channel](http://localhost:8080/channel) in your web browser.
+Open [http://localhost:8080/channel/default](http://localhost:8080/channel/default) in your web browser.
 
 In another terminal, use curl to publish something:
 
 	$ curl -i -X POST -H 'X-CPS-Publish-Key: xyz' \
-	  --data-binary '<p>hello</p>' localhost:8080/channel
+	  --data-binary '<p>hello</p>' localhost:8080/channel/default
+
+"hello" should appear in your browser when you run the command above. Open more tabs with  [http://localhost:8080/channel/default](http://localhost:8080/channel/default) 
+and run the curl command a few more times.
+
+
+## Configuration file
+
+The server can be configured by a YAML file (passing filename, or "-" for stdin, with `-f` flag)
+which can describe multiple servers, which in turn each can describe multiple channels.
+
+Parameters like `address`, `port` and `log_level` are hierarchical
+-- i.e. specifying `log_level 3` for a server will implicitly set `log_level 3` for all 
+its channels which do not themselves set `log_level`.
+
+### Example
+
+	servers:
+	  - address: "0.0.0.0" # ANY
+	    port: 8080
+	    channels:
+	      test:
+	        publish_key: xyz
+	        log_level: 3
+	      test2:
+	        max_clients: 3
+
+	  - port: 8081
+	    log_level: 2
+	    channels: {a: {publish_key: xyz}, b: {}}
 
-"hello" should appear in your browser when you run the command above. Open more tabs with  [http://localhost:8080/channel](http://localhost:8080/channel) and run the curl command a few more times.

cometpsd.c

@@ -489,7 +489,7 @@ int main(int argc, char **argv) {
 	// load configuration file
 	if (config_file) {
 		yconf_load(&config, config_file);
-		log_level += 1 - (int)yconf_get_int(&config, "logging/log_level", (long long)log_level);
+		log_level += 1 - (int)yconf_get_int(&config, "log_level", (long long)log_level);
 		//printf("config: servers/0/address => %s\n",
 		//	yconf_get_str(&config, "servers/0/address", "?"));
 		//printf("config: servers/1/channels/test2/max_clients => %lld\n",

cometpsd.yml

@@ -1,6 +1,4 @@
-logging:
-  log_level: 1
-
+log_level: 1
 servers:
   - address: "0.0.0.0" # ANY
     port: 8080