src/ --> all of the files to be used in production
public/ --> AngularJs application
css/ --> css files
bootstrap.css --> bootstrap stylesheet
style.css --> application stylesheet
img/ --> image files
index.html --> app layout file (the main html template file of the app)
js/ --> javascript files
Controllers --> application controllers
Directives --> application directives
filters --> custom angular filters
Services --> custom angular services
app.js --> application
lib/ --> angular and 3rd party javascript libraries
angular/
angular.js --> the latest angular js
angular.min.js --> the latest minified angular js
angular-*.js --> angular add-on modules
version.txt --> version number
require.js --> require.js library
template/ --> angular view partials (partial html templates)
Main.html
config/testacular.conf.js --> config file for running unit tests with Testacular
scripts/ --> handy shell/js/ruby scripts
test.bat --> autotests unit tests with Testacular (windows)
test.sh --> autotests unit tests with Testacular (*nix)
test/ --> test source files and libraries
lib/
angular/ --> angular testing libraries
angular-mocks.js --> mocks that replace certain angular services in tests
angular-scenario.js --> angular's scenario (end-to-end) test runner library
unit/ --> unit level specs/tests
controllers.test.js --> specs for controllers
directives.test.js --> specs for directives
filters.test.js --> specs for filters
services.test.js --> specs for services