Compatibility with Play 2.2.0-M2

[J T]

Hi,

I've got the following errors when compiling in a play2.2.0-M2 project

[error] org.scala-stm:scala-stm _2.10, _2.10.0
error Conflicting cross-version suffixes in: org.scala-stm:scala-stm

Thanks

[Olivier Jacquemart]

See ReactiveMongo/Play-ReactiveMongo#43