annotation detection doesn't work in scala projects

[casualjim]

The annotation processing doesn't work in scala projects because they compile the .class files to a different location.

in java the class files are put in target/classes
but in a scala project built with sbt (I don't think this is an issue for maven projects) the class files are located in
target/scala_{scala.version}/

for example:
/Users/ivan/temp/atmotest/target/scala-2.9.2/classes...

I think changing this line https://github.com/Atmosphere/atmosphere/blob/master/modules/cpr/src/main/java/org/atmosphere/cpr/AtmosphereFramework.java#L1147

to have the following regex should fix it

^.*/(WEB-INF|target)(?:/scala-[^/]+)?/(test-)?classes/(.*)\\.class