Add new feature: access password

[LancerComet]

// In app.js ... const keepItSecret = true // Now a password is require to access this docsify :) ...

[QingWei-Li]

Thank you for your Pull Request.

I have two questions.

• Why move lib/ folder to public/? It will break the current use.
• How do we use this feature in GitHub Pages?

However, i like the idea. 😄

[LancerComet]

@QingWei-Li 🎈🎅

1. Sorry for doing that, I just want to have a folder to store static files.
2. This feature is intended to be used in local server, I didn't expect to use it on github, what a shame!😂😂

[QingWei-Li]

Maybe we should add this feature into docsify-cli, not here.

But I don't understand why need password in local server.

[LancerComet]

@QingWei-Li
In my case, I run docsify on an open server but I just want people who have password can get access to our docs.

[QingWei-Li]

cool!

Move the feature to docsify-cli, what do you think? We can add a command that enable HTTP authentication. such as https://github.com/zeit/serve#authentication

[LancerComet]

@QingWei-Li
Cool, I will go to check it later 😆