added CLI interface to retrive datacenter information
diff --git a/emuvim/cli/compute.py b/emuvim/cli/compute.py
index df40814..87247cb 100644
--- a/emuvim/cli/compute.py
+++ b/emuvim/cli/compute.py
@@ -80,7 +80,8 @@
 parser = argparse.ArgumentParser(description='son-emu compute')
 parser.add_argument(
     "command",
-    help="Action to be executed: start|stop|list")
+    choices=['start', 'stop', 'list', 'status'],
+    help="Action to be executed.")
 parser.add_argument(
     "--datacenter", "-d", dest="datacenter",
     help="Data center to in which the compute instance should be executed")