[doc] Add missing supported columns

Author: arliang

README.md

@@ -52,9 +52,12 @@ forever start app.js
     clear <key>         Clears the specified forever config <key>
     logs                Lists log files for all forever processes
     logs <script|index> Tails the logs for <script|index>
-    columns add <col>   Adds the specified column to the output in `forever list`. Supported columns: 'uid', 'command', 'script', 'forever', 'pid', 'id', 'logfile', 'uptime'
+    columns add <col>   Adds the specified column to the output in `forever list`
     columns rm <col>    Removed the specified column from the output in `forever list`
     columns set <cols>  Set all columns for the output in `forever list`
+                        Default columns: `uid`, `command`, `script`, `forever`, `pid`,
+                                         `logfile`, `uptime`
+                        Other supported columns: `id`, `dir`
     cleanlogs           [CAREFUL] Deletes all historical forever log files
 
   options:

lib/forever/cli.js

@@ -37,10 +37,13 @@ var help = [
   '  clear <key>         Clears the specified forever config <key>',
   '  logs                Lists log files for all forever processes',
   '  logs <script|index> Tails the logs for <script|index>',
-  '  columns add <col>   Adds the specified column to the output in `forever list`. Supported columns: \'uid\', \'command\', \'script\', \'forever\', \'pid\', \'id\', \'logfile\', \'uptime\'',
+  '  columns add <col>   Adds the specified column to the output in `forever list`',
   '  columns rm <col>    Removed the specified column from the output in `forever list`',
   '  columns set <cols>  Set all columns for the output in `forever list`',
   '  columns reset       Resets all columns to defaults for the output in `forever list`',
+  '                      Default columns: `uid`, `command`, `script`, `forever`,',
+  '                                       `pid`, `logfile`, `uptime`',
+  '                      Other supported columns: `id`, `dir`',
   '  cleanlogs           [CAREFUL] Deletes all historical forever log files',
   '',
   'options:',