Add note to README regarding building uber-jars (#206)
Add note to README regarding building uber-jars (#206)

Signed-off-by: Marcono1234 <3afe11f3d53b2acccc647c9b0e7960241d137996@users.noreply.github.com>
talsma-ict/context-propagation,talsma-ict/concurrency