Added a more easy-to-use mode for the user select a precise time in the most recent period.

[jiangleo]

There is no one fit in the existing mode, when I only need to select a precise time in the most recent period.

So, I add a recenttime option to the mode and add a formatSingleDate method.

[jiangleo]

Project lint has a problem, it check the file in node_modules and throw error.

I have already solved the problem of lint and add a demo of recent mode.

[warmhug]

Like these { mode, use12Hours } => {mode, use12Hours} do not change please. Only change the smallest part you need to change.

[paranoidjk]

ping @jiangleo