sbtize

i left the source files where they are for now. in the future it might be better to move them to `src/main/scala`, so you can separate out test files to `src/test/scala`, and resources (stuff like `labelset`) to `src/main/resources`. but i definitely understand the desire to keep things simple.

i couldn't figure out how to run `./sbt  runMain ...` from anywhere but the project's root dir, which some of the training commands require, so i left the `java -cp target/scala-2.10/jamr-assembly-0.1-SNAPSHOT.jar` version as the default in `./run`.

also added smatch, which I don't *think* has any licensing restrictions on it