update to latest version of Kryo
cross-build for 2.9.2, 2.9.3, and 2.10.1
bump version number
Merge pull request #14 from 30ss/master

Support for Scala 2.10
Process references in a way compatible with the latest Kryo version.
Use latest Kryo APIs. Add support for custom Kryo instance configuration
classes, which can be specified in the config file.
Use latest versions of Kryo and Akka. Try to support different versions
of Scala
Use Scala version 2.10.2 as recommended by Akka 2.2.1 docs.
Make ActorRef serializer compatible with Akka 2.2.1
Make custom serialier init class name an optional field in the
configuration
Some changes to make KryoSerializer compatible with Akka 2.2.1 APIs
Make unit test compile and execute properly again
Remove references to some classes from tests
Fix unit test
Remove unused class
Fix handling of optional configuration settings
Fix handling of Kryo instance customizers. Seems to work now.
Provide better README
Improve formatting
Update to Kryo 2.22