Podfile post_install hook to fix EMBEDDED_CONTENT_CONTAINS_SWIFT

Podfile

post_install do |installer|
    ignore_overriding_contains_swift(installer, 'MyFramework')
end

def ignore_overriding_contains_swift(installer, framework_target)
    target = installer.aggregate_targets.find{|t| t.name == "Pods-#{framework_target}"}
    raise "failed to find #{framework_target} among: #{installer.aggregate_targets}" unless target
    target.xcconfigs.each_value do |config|
        config.attributes.delete('EMBEDDED_CONTENT_CONTAINS_SWIFT')
    end
end