Current example/index.html doesn't work well for real trading data. It creates gap in the plot.
Following fix will take out weekends and non-trading hours. If including pre-post trading hours in the data then this shouldn't be an issue, but most of the users may only be working with trading data.
margin: { r: 5, t: 5, b: 50, l: 5 }, xaxis: { autorange: true, type:'date', rangebreaks:[{bounds:[13, 6.25], pattern: 'hour'}, {bounds:['sat', 'mon']}]}, yaxis: { autorange: true, type: 'linear' },