Fix for #49, upgrade scala to 2.11.2

Fix for #49, upgrade scala to 2.11.2
In response to Kam's note above about multiple /appmaster/{id}/{id}. A more concise Jax-RS way of doing that would be /appmaster/{id : .+}.  That allows for multiple ids to be passed in as PathParams and not having to resort to using QueryParams or MatrixParams.