ignore the line of 'sentinel try-failover' cause of following message:

    *** FATAL CONFIG FILE ERROR ***
    Reading the configuration file, at line 53
    >>> 'sentinel try-failover sentinel_sentinel'
    Unrecognized sentinel configuration statement.
Merge pull request #1 from groovenauts/fix/ignore_can_failover

ignore the line of 'sentinel try-failover' cause of following message: