docs: Updated GettingStarted.md

Edited GettingStarted.md to correct some steps, added steps that were
needed but not present, and deleted unecessary steps.

Addressing comments from patchset 1. Mostly formatting errors and
slight content revisions.

Change-Id: Ie40684c2abfc6984638b5f9a3983ad07bd293fdc
1 file changed
tree: 4f1a0542c468f8552ba853704f59d2804dfaee5c
  1. GettingStarted.md