Improve KryoInjection
Merge branch 'release/0.2.2' into develop
Add test case for serialization of custom objects.

This doubles as example code for creating customized KryoBijection
subclasses that serialize custom classes that have a bijection to a
primitive type.
Merge pull request #51 from schmmd/customtest

Add test case for serialization of custom objects.
Update test case actually use the custom KryoInjection and move the case classes inside the Spec.
Merge pull request #52 from schmmd/customtestfix

Update test case actually use the custom KryoInjection.
Merge pull request #44 from twitter/feature/faster-injection

Improve KryoInjection
fix tests
Merge pull request #53 from twitter/feature/fix_tests

Fix Test Breakage from Injection updates
Add helper method to avoid specifying types when registering bijections.
Use explicit bijeciton for only some of the classes.
Merge pull request #54 from schmmd/easybij

Add helper method to avoid specifying types when registering bijections.
Bump Kryo to 2.21, Bijection to 0.4.0, optimize Traversable
Merge pull request #56 from twitter/kryo-2.21

Bump Kryo to 2.21, Bijection to 0.4.0, optimize Traversable
Update README/CHANGES, version bump
Merge branch 'release/0.2.3'
Merge branch 'master' of github.com:twitter/chill