Extension isn't appearing in inDesign Window -> Extensions

[pratikmakune3]

The issue is after creating the custom-extension inside Brackets editor, I'm unable to see that extension inside inDesign. The steps I took -

1. Downloaded Brackets editor, latest version 1.10
2. I can see the CC Extension Builder directly on the menu bar.
3. Clicked it -> Choose "New Create Cloud Extension" option
4. I can see the window "Creative Cloud Extension Builder(Beta)". It is asking me Extension Name and Unique ID, provided with name as Hello World and id as com.example.helloworld. Then clicked on Create Extension.
5. I get the extension files created css, csxs, jsx etc..
6. Then I open inDesign CC 2017.
7. I can't see the Hello World Extension in the Window -> Extensions.

Is there any step I'm missing? I followed all the steps you mentioned in the video on : http://davidderaedt.github.io/CC-Extension-Builder-for-Brackets/

Looking forward to hear from you.