STORM-312 : add storm monitor tools to monitor throughtput interactively

This cmd line tool 'storm monitor' will use Nimbus.Client to get throughput information from Nimbus Server.
1)One can specify topology's name, component's name to monitor it's throughput interactively.
2) It will statistics 'emit' or 'transferred' throughput in a given time window and print it in a given time frequency
The implementation will be much like yahoo's storm-perf-test (http://yahooeng.tumblr.com/post/64758709722/making-storm-fly-with-netty)
Sorry for putting you in this bad position. I simply thought that your code could be stepped forward to be a useful monitoring tool.  And thanks for your carefully review.

As you say, it is much better to use clojure.tools.cli. I will fix this in time.