Fix a typo in cros_workon, and make command help output nicer
Fix a typo in cros_workon, and make command help output nicer

Details

  The cros_workong help text has a typographic error of 'commond'
  rather than 'command'.  This change addresses that issue.

  The help text output for the list of commands was also not nicely
  aligned, so I've addressed that, too.

Testing

  ~thutt/g-chroot-execute sudo emerge cros-devutils

  After the build & install completed, I executed:

    ~thutt/scripts/g-workon --help

  The output now looks like the following.  The typo was on the
  'iterate' command.

usage: /usr/bin/cros_workon <command> [flags] [<list of packages>|--all]
commands:
  start:     Moves an ebuild to live (intended to support development)
  stop:      Moves an ebuild to stable (use last known good)
  list:      List of live ebuilds (workon ebuilds if --all)
  list-all:  List all of the live ebuilds for all setup boards
  iterate:   For each ebuild, cd to the source dir and run a command
flags:
  --board:  The board to set package keywords for. (default: '')
  --[no]host:  Uses the host instead of board (default: false)
  --command:  The command to be run by forall. (default: 'git status')
  --[no]all:  Apply to all possible packages for the given command (default: false)
  -h,--[no]help:  show this help (default: false)

BUG=0
TEST=See above

Review URL: http://codereview.chromium.org/6812022

Change-Id: Idbf9f2cdde1095c310a79740eeef08087c0d415c

mgireesh05/dev-util,coreos/dev-util,marineam/coreos-dev-util,marineam/coreos-dev-util,coreos/dev-util,mgireesh05/dev-util,mgireesh05/dev-util,coreos/dev-util