Add support for BigInt pickling/unpickling.
Updates Scala version from 2.10.2 to 2.10.3 in README
Add test for BigInteger to PicklingJsonSpec.
Merge pull request #56 from theBlackDragon/bigint-support

Add support for BigInt pickling/unpickling.
Fix #57 - Can't generate unpickler in class hierarchy when passing object params to parent
Merge pull request #58 from scala/issue/57

Fix #57 - Can't generate unpickler in class hierarchy when passing objec...
Add support for java.util.Date pickling/unpickling.
Merge pull request #62 from theBlackDragon/date-support

Add support for java.util.Date pickling/unpickling.
Clean-ups for PR #62, java.util.Date custom pickler