Set readable stream to specific version
Merge pull request #46 from uber/connection-cache

Connection cache for producer
remove node 0.9 from travis build set.
Document the producer
Fix typo
Merge pull request #47 from Raynos/patch-1

Document the producer
kill the /lib dir and move classes to the top level, simplifying
organization.
use istanbul instead of jscoverage
version bump 0.7 (these versions are not related to kafka versions)
properly set devdependencies.
Reduce needless copies in the Prozess consumer