* Clean up asterisk placements in variable declarations.
* Add/fix appledoc section headers.
* Fill in missing documentation, parameter definitions, and return values.
* Clean up whitespace inconsistencies.
* Reorganize section layout for documentation clarity.
* Added support for monitoring by IP address or hostname as well as local Wifi and Internet access generally
* Eliminated usage of synchronous calls to obtain reachability flags during status checks
* Reworked SystemConfiguration reachability callback to cache flags
* RKClient now monitors Internet access instead of hostname based reachability by default. baseURLReachabilityObserver eliminated in favor of reachabilityObserver. It is now a retain property that can be customized
* Queue suspension is now tied to the reachability observer rather than baseURL mutation
