Remon Logger Interface

[wynot12]

DONE

• Implement RemonLogger's userinterface
  • Including start~end logging.

RemonLogger provides below interfaces.

  public void start(final String tag);
  public void end(final String tag);
  public void value(final String tag, final double value);
  public void log(final Level level, final String msg);
  public void event(final String tag, final EventType type);

start and end are wrapper methods of event.