The following command line options instruct the GenRocket runtime to download the GenRocket description libraries, GeneratorDescriptions.lib and ReceiverDescriptions.lib.  These two libraries contain the description of all GenRocket Generators and Receivers.  These libraries are needed when using the GenRocket API to retrieve information about a given Generator or Receiver in realtime.  When the command is executed, the libraries are downloaded to the computer and automatically placed in the .genrocket subdirectory.