enable --field selector for streamcorpus.dump
creating initial Makefile for scala build and test;
there is probably a way to automate this in a more scala-ish way...
updating test for iteresting over tokens from a streamcorpus chunk.

Thanks to Jacek Ambroziak!
moving comments out of enums, because the scrooge scala thrift compiler cannot handle them
scala package compiled for streamcorpus.thrift v0_2_0
updating README, constructing jar and storing it in repo, tests pass
Merge branch 'master' into v0.3.0-dev
updating scala Makefile to use if/VERSION