Created URLRequest class and rewritten JavaNetworking to use it
Changed URLRequest from sublclass to wrapper
Renamed classnames
Renamed classes
Added gson source files
Renamed gson package name
Merge branch 'URLRequest' into dev
Added getOperationQueue
Changed exception type
Added default parameter values
Added failure interface method
Updated OperationQueue lib
Added getHeaderFields method
Change return type from getOutputStream
Merge branch 'dev'