Create README.md
Deprecated Aggregator.complete
Made Aggregator.data non-optional
Merge pull request #49 from alexeyr/issue/30

Issue/30
Extracted common code
Added feature warnings
Removed reflective calls
Included feature warnings in build.sbt
Merge pull request #50 from alexeyr/master

Minor cleanups
Update version to 2.10.2
Create .travis.yml
Update .travis.yml
Update .travis.yml
Update build.sbt
Update build.sbt
Update README.md
Update .travis.yml
Update .travis.yml

Adding credentials.
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Update .travis.yml