Precompiled Macro to resolve conflicts with AFNetworking Network Indicator. 

Adding support to the class to work in collaboration with the AFNetworking activity indicator manager. That way there is no conflict when having requests from AFNetworking using the network indicator.

I am using RestKit (0.20) and SDWebImage in the same project. As originally your network indicator conflicted RestKit's (AFNetworking). What I did was to just proxy AFNetworking from your SDNetworkActivityIndicator class. It works nice.