Merge pull request #54 from holdenk/master

Source based on 0.15.1
Update finagle to 5.3.6.
upgrade various deps and timeout config

Bump Finagle to 5.3.24.
Bump Lift to 2.4.

Finagle has very low default timeout values. Increase the timeouts to be generous.
release 0.15.4
Update to elasticsearch client 0.19.9.
Update to elasticsearch client 0.19.12.
Add a test for score of 0.0 and notice the comment saying it blows up is no longer correct, remove comment.