Initial commit - parsing args like Tool does. But may not end up using this eventually.
Works now for both local and hdfs modes - except one warning for bad params --hdfs and --local during startup
Tests should now run during assembly
Adding an hdfs option to scald-repl.sh. Works, but still need to clean up a bad param warning.
Merge branch 'scalding-repl' of https://github.com/sriramkrishnan/scalding into scalding-repl