Add link to Fastly.com
Add link to Fastly.com

  The Fastly license we plan to use for their CDN services requires we
  include their logo. So, let's add their logo first to make sure we
  always comply with that requirement.

Signed-off-by: David A. Wheeler <9ae72d22d8b894b865a7a496af4fab6320e6abb2@dwheeler.com>

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