added loading indicator to async component loading
added license header to file
feature/ajax-loading-indicator -> refactored for extensibility
feature/ajax-loading-indicator - added better scope for jslint config
Merge pull request #1 from davidjgonzalez/feature/ajax-loading-indicator

feature/ajax-loading-indicator -> refactored for extensibility
Merge pull request #240 from steffenrosi/feature/ajax-loading-indicator

Added loading indicator support to the ajax component