bump AFNetworking to 2.0.0
quick port to AFNetworking 2.0 that includes the Basic Example
bump the podspec dependency version to 2.0.0
Merge remote-tracking branch 'proger/master'

* proger/master:
  bump the podspec dependency version to 2.0.0
  quick port to AFNetworking 2.0 that includes the Basic Example
  bump AFNetworking to 2.0.0