Rename to balena-preload

[zvin]

Change-type: patch Signed-off-by: Alexis Svinartchouk alexis@resin.io

Things to do before merging:

• forums.balena.io (referenced in the readme)
• api.balena.io
• registry2.balena.io
• rename organization (links to the docs repo in the README)
• change resin-sdk to balena-sdk in package.json
• change resin-cli-visuals to balena-cli-visuals

[pimterry]

@resin-ci retest

[pimterry]

@resin-ci retest