Reverse dependencies for ffwd

Latest version of the following gems require ffwd

Gem	Version	Date	Downloads
ffwd-riemann +116 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	116 Thousand
ffwd-kafka +105 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	105 Thousand
ffwd-statsd +87.1 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	87.1 Thousand
ffwd-tunnel +82.1 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	82.1 Thousand
ffwd-kairosdb +82 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	82 Thousand
ffwd-carbon +81.8 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	81.8 Thousand
ffwd-collectd +81.8 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	81.8 Thousand
ffwd-protobuf +65.1 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	65.1 Thousand
ffwd-datadog +44.2 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	44.2 Thousand
ffwd-google-cloud +22.4 Thousand Downloads	`0.4.7` March 13, 2015	March 13, 2015	22.4 Thousand