CLI: advise users to install it, not to 'download' it.
Merge pull request #23 from pjcdawkins/proofreading/cli-no-download

CLI: advise users to install it, not to 'download' it.
Drupal: proofreading
Merge pull request #28 from pjcdawkins/proofreading/drupal

[WIP] Drupal: proofreading
More proofreading
Merge pull request #29 from pjcdawkins/proofreading

More proofreading