Www folder in Browser only contains js files but no other folders

I’m building a sample Ionic app and I’ve structured the app as follows:

|-- www

|-- index.html

|-- src

|-- core.js
|-- core.css
|-- global

|-- views

|-- landing

For some reason, when I type ionic serve, I see core.js but I don’t see the folder global folder. What could be the issue?

Need to inject all the files in the subdirectories into index.html. This can be done manually or through gulp using the inject module.