I added the XML config reader to the respository and added support to ARCRecordReader...
ARCRecordReader can now function without cmd line args... assuming the config file is configured and in the same directory. The reader will still work with cmd line args. I still need to more thorough testing on it. Ask me if something is not clear. The ChronicaConfigReader can be called by first calling ChronicaConfigReader.getConfigReader(). Then call getPrameter(ChronicaConfigReader.parameterKey).
Should we still be checking for record type in ARCRecordReader? Should this be read from the config file? Is there anything else that can be cleaned up in there that we don't need any more?