No realtime data

[jaggerwang]

I can see last 15 min, last 1 hour, etc. But realtime data is always empty, the monitor crontab item set as follows。
*/5 * * * * cd /RedisLive/src && ./redis-monitor.py --duration=60 >>/tmp/cron.log 2>&1

[leto]

This is related to #71, please ask the author to merge that

[nkrode]

#71 is merged