Disable rubinius builds in travis
Merge pull request #38 from rtyler/issues/8-bundle-librdkafka

Bundle librdkafka 0.8.4 with the gem
first pass adding java kafka provider
add specs for java_producer
add require jars to top level module
updates specs, fixup producer exceptional handling
add rdoc
Merge pull request #41 from jamescway/add-jruby-producer

Java Producer Provider
push method returns executing Promise
Merge pull request #42 from lookout/execute_promise

Push method returns executing Promise
Remove Gemfile.lock which will now be dependent on the version of Ruby

The contents will be wildly different depending on an MRI vs. JRuby-based installation
Clean up the execution of RSpecs to run the platform-specific tests in the right place
Add JRuby to the list of rubies we should test on
Avoid building the C extension on JRuby
Remove support for Ruby 1.8.7

It's like, a million times dead. Concurrent Ruby won't support it which forces our hand though.
Merge pull request #43 from rtyler/platform-specific-specs

Clean up RSpecs to run the platform-specific tests in the right runtime
add zookeeper broker lookup to Java provider
refactor zookeeper lookup into Discovery class
Merge pull request #44 from lookout/connect_zk

Lookup Kafka brokers from Zookeeper
Update the README with producer usage for the "new way"

Fixes #26