Hand tested to work
Caching collection names so that specs run faster
Prevent cacheing of new databases
Only warn about not-caching once
Oops

Swapped the order of two arrays
Merge branch 'mongo_multiple' of github.com:nyarly/database_cleaner into nyarly-mongo_multiple

Conflicts:
	Gemfile
	Gemfile.lock
	lib/database_cleaner/mongo/truncation.rb
	lib/database_cleaner/mongoid/truncation.rb
	spec/database_cleaner/base_spec.rb
Merge branch 'nyarly-mongo_multiple'