Merge pull request #2516 from s7v7nislands/fix_usage

Fix influxd help usage

cmd/influxd/help.go

@@ -22,8 +22,9 @@ Usage:
 
 The commands are:
 
+    backup               downloads a snapshot of a data node and saves it to disk
     config               display the default configuration
-    join-cluster         create a new node that will join an existing cluster
+    restore              uses a snapshot of a data node to rebuild a cluster
     run                  run node with existing configuration
     version              displays the InfluxDB version
 

cmd/influxd/run.go

@@ -719,6 +719,9 @@ is used.
         -config <path>
                           Set the path to the configuration file.
 
+        -cpuprofile <path>
+                          Set the path to the cpuprofile.
+
         -hostname <name>
                           Override the hostname, the 'hostname' configuration
                           option will be overridden.
@@ -726,6 +729,9 @@ is used.
         -join <url>
                           Joins the server to an existing cluster.
 
+        -memprofile <path>
+                          Set the path to the memprofile.
+
         -pidfile <path>
                           Write process ID to a file.
 `)