Revert "Revert "Add Aesh and LiveOak logo for the sprite""

This reverts commit 06309c673f3f3cb7a82f86611d2bbf2ea2cbcf95.
Merge pull request #575 from paulrobinson/images

Revert "Revert "Add Aesh and LiveOak logo for the sprite""
Update cdn.yml
Added instructions to gpg-agent
Merge pull request #567 from rafabene/master

Added instructions to gpg-agent
Tidied up some text
Update cdn.yml
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