Sample app PRAR-Example: Support Cocoapods 1.2.0

[wtimme]

Running pod install with Cocoapods 1.2.0 in the PRAR-Example project results in

[!] The dependency FMDB (~> 2.0) is not used in any concrete target.
The dependency AFNetworking (~> 1.0) is not used in any concrete target.
The dependency SCNetworkReachability (~> 1.0) is not used in any concrete target.

The app should support version 1.2.0.