[Java] Update post release readme.
[Java] Update post release readme.

PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding,PKRoma/simple-binary-encoding,real-logic/simple-binary-encoding,marksantos/simple-binary-encoding,real-logic/simple-binary-encoding,real-logic/simple-binary-encoding,real-logic/simple-binary-encoding,marksantos/simple-binary-encoding,marksantos/simple-binary-encoding,marksantos/simple-binary-encoding,buybackoff/simple-binary-encoding,marksantos/simple-binary-encoding,PKRoma/simple-binary-encoding,real-logic/simple-binary-encoding,PKRoma/simple-binary-encoding,buybackoff/simple-binary-encoding,buybackoff/simple-binary-encoding,PKRoma/simple-binary-encoding,real-logic/simple-binary-encoding,PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding,real-logic/simple-binary-encoding,buybackoff/simple-binary-encoding,PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding