Download Sencha Touch 2 PR4. Extract the archive to a folder named 'touch' in ~/lib/. The ST2 library is 40+ mb so it's not included in this repo.
app.js
app/
controller/
model/
proxy/
store/
view/
data/
lib/
touch/
(sencha touch library)
resources/
css/
images/
themes/
The app folder holds all the JS resources written for the application. This folder contains the model, view, controller, store, and proxy folders.
It is a reserved folder name ; when used correctly, your various models, views, controllers, stores and proxies will be automatically found.
The data folder holds any static data files, such as json.
It is a reserved folder name; when used correctly, your application will automatically find your stored data. However, automatically loading it is a config setting.
The lib folder is used to hold all your library packages used to build the application. In this case, we're just using the Sencha Touch 2 PR4 library.
The lib folder doesn't appear to be a reserved folder name, though, it seems standard practice in most other ST apps.
The resources folder is used to hold other application-related files such as your CSS or images.
The resources folder is not a reserved folder name in Sencha Touch, however, it does seem to be a common location for these type of files among other ST apps.
The themes folder is used to house your custom Sencha Touch application theme.