Donovan Jones c7c9d0d003 make getting_started script idempotent and add consistent messages
This patch does the following:

* ensures that the script is somewhat idempotent so if it is run more than once
  it will not create duplicate instances
* adds consistent messages at each step, ensuring that all steps have
  consistent output

Change-Id: Ifb3a67604dbe65a27096ad01a0aa8ef7e34338be
2015-08-11 10:57:38 +12:00
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