Modernizing the project and use AFNetworking 3.0#19

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Commits on Jun 22, 2018

Modernizing the project and updating to use AFNetworking 3.0
farktronix
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Commits on Jul 3, 2018

Rename AppDelegate to PSUpdateAppDelegate to avoid potential conflicts with other apps that link this pod and use the generic app delegate name
farktronix
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