[Feat]: In mobile screen need to add button of version

[harshal050]

In mobile screen need to add button of version

issue fix: #331

Steps :

1 : open site in mobile screen
2 : go to https://nightwatchjs.org/
3 : click on 3line of navbar
4 : Fix this issue to need to add button of version

[anushree0809]

Hi, can you please clarify the changes needed? I can see this on clicking on the three lines:

So what changes are needed?