Don't support JRuby Nokogiri in Travis CI
Don't support JRuby Nokogiri in Travis CI

This should not be considered a failure. Happy to accept patches,
though.

Also making some notification settings changes.

Signed-off-by: Stephen Celis <06fa905d7f2aaced6dc72e9511c71a2a51e8aead@stephencelis.com>

SupportPay/recurly-ruby,SupportPay/RecurlyDemoNew,SupportPay/RecurlyDemoNew,SupportPay/recurly-ruby