Implement connect method
Merge pull request #16 from unnonouno/client-helper

Implement connect method
Make test for nearest_neighbor client
Merge pull request #18 from jubatus/feature/nn-test

Make test for nearest_neighbor client
Merge pull request #17 from jubatus/idl-version

Insert idl-version to generated codes
Merge remote-tracking branch 'upstream/develop' into add_clustering_test_only
Fix typo in config