fixed issue with excon ciphers
fixed issue with excon ciphers

Got a report that user was getting an SSL issue
that looks a lot like https://github.com/jruby/warbler/issues/340
Added ciphers explicitly go get around this.

IBM-Watson/wex-appbuilder-samples,IBM-Watson/wex-appbuilder-samples,IBM-Watson/wex-appbuilder-samples,IBM-Watson/wex-appbuilder-samples