Porting to AFNetworking 2.0 RC3

Fixing FIXME: Moving parser logic to the services layer
Porting to AFNetworking 2.0 RC3

Fixing FIXME: Moving parser logic to the services layer
Adding Network activity indicator from AFNetworking!
Adding network request log when debugging;

Refactor PeopleServices:
- Changes methods to class methods;
- Removing Singleton pattern;
Merge branch 'master' of github.com:chrisfsampaio/People-iOS

Conflicts:
	People/People/Classes/PeopleProfileViewController.m