bump patch level for doc generation 

dependency logstash-core-plugin-api ~> 1.0 

dependency logstash-core >= 2.0.0.beta2 < 3.0.0 

dependency logstash-core >= 2.0.0.snapshot < 3.0.0 

version 0.9.2 bump, including minor changes to make the test all plug… …ins pass in the core logstash Fixes #2