added readme for the nsqd and nsqlookupd apps
update twitter
nsqd/nsqlookupd: tweak app readme wording
util: s/ParseReaderOpts/ParseOpts
to_nsq: add --producer-opt flag; cleanup
nsq_stat: cleanup
nsq_tail: add --consumer-opt; cleanup
nsq_to_file: add --consumer-opt; cleanup
nsq_to_http: add --consumer-opt; cleanup
nsq_to_nsq: add --consumer-opt and --producer-opt; cleanup
bump go-nsq to pickup tls-cert and tls-key
nsqd/nsqlookupd: simplify signal handling
Merge pull request #442 from mreiferson/writer_opt_442

nsq_to_nsq: need --writer-opt flag
bump go-nsq to pickup underscore opt name fix