Angular Js Life cycle & module API

PHASES, happen each time web page is loaded in the browser.
1. Bootsrap.
	WHEN: JS lib is loaded.
	- Angular inits own components ;
	- Module initialization in ng-app;
	- When module is loaded and any injected deps are available;
2. Compilation
	Static DOM is loaded in the browser and replaced by dynamic DOM(Anglar VIEW)
	TWO PARTS: 1. Traversing static DOM directives linking
				2. The directives are combined with a scope to produce the dynamic view
3. Runtime
	Exists until user reloads th page. Any changes in the scope are reflected in
	the view.

MODULE API:
	MODULE - container for different parts of your app(ctrls, services, filters,
	directives, etc);

	A module is a collection of configuration and run blocks which get applied
	to the application during the bootstrap process.
	LOADINDG
		config blocks - Use this method to register work which needs to
		be performed on module loading.

		run blocks - Use this method to register work which should be performed
		when the injector is done loading all modules.

SERVICES TYPES:
!singletones
- CONSTANT: app.constant('const', {})
- VALUE: mutable, app.value('const', {})
- FACTORY: app.factory('foo', function()); Может вернуть любой тип данных,
	нужно лишь вернуть чо-либо.
- SERVICE, app.service('foo', Constructor)
- PROVIDER, app.provider('foo', function)
	функция должна вернуть объект с $get. Провайдер ожидает функцию $get,
	которая будет тем, что мы внедряем в другие части нашего приложения.
	Поэтому, когда мы внедряем foo в контроллер, то внедряется функция
	$get.