Merge pull request #10 from arb/cli-refactor

Refactored command line to use yargs and moved logic out of binary
fix up fixture and log test a bit more
fix up a little bit more
fix newline and if no additional args then show help for broadcast
fix argv to be slightly better
Merge pull request #11 from lloydbenson/master

fix up fixture and log test a bit more
Refactored cli.js
Merged from upstream.