minor: remove puts
minor: whitespace in ordered_hash.rb
RUBY-535 replace #clone with #initialize_copy
minor: adding deprecation notice for strict to readme
RUBY-572 fixing call to checkout_reader in DB#authenticate

The interface for MongoReplicaSetClient#checkout_reader was changed recently in RUBY-475. This usage of checkout_reader was missed and currently calls to DB#authenticate raise an exception.
clean-up: out-dated, we're not running them and auxiliary is misspelled \o/