Updating README for Xcode 12.5 support (#507)
Updating README for Xcode 12.5 support (#507)

Signed-off-by: Ravi Mandala <a9aa17702c2784f011729650aefe430e559f6a67@linkedin.com>
linkedin/bluepill,linkedin/bluepill,linkedin/bluepill,linkedin/bluepill,linkedin/bluepill,linkedin/bluepill