use all memstats for percentiles
Merge pull request #440 from jphines/master

update memstats circular buffer
added readme for the nsqd and nsqlookupd apps
update twitter
util: s/ParseReaderOpts/ParseOpts
to_nsq: add --consumer-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