README.md in prometheus-splash-0.1.1 vs README.md in prometheus-splash-0.2.0

@@ -73,11 +73,16 @@
 With :
 
 - SERVER : IP or fqdn of the Gateway.
 - PORT : the specific TCP port of the Gateway.
 
+If you have already setup, you could use --preserve option to keep your active configuration and report file on place
+This is usefull for automatique Idempotent installation like with Ansible :
 
+    # splash conf set --preserve
+
+
 ### Sanitycheck
 
 As root or with rvmsudo, if you use RVM.
 
     # splash conf san
@@ -473,11 +478,11 @@
        * Prometheus Gateway notified.
        * Without callbacks sequences
 
 #### Display the last execution trace for a command
 
-If you want to view the last execution trace for  commande, (run with --trace : default)
+If you want to view the last execution trace for  commande, (only if executed with --trace : default)
 
     # splash com lastrun
     Splash command pwd previous execution report:
 
     Command Execution report
@@ -498,9 +503,14 @@
 
 
 
     STDERR:
     -------
+
+
+Lastrun could receive the --hostname option to get the execution report of command
+
+
 ### Advanced  Configuration
 
 #### Backend configuration
 
 For the moment Splash come with two types of backend :