minor fixed
simple app to convert between bar and psi pressure unit.and also others unit include:bar psi kg/cm2 mbar Pa kPa MPa inH2O mmHg N/m2 hPa atm mmH2O inHg mH2O Torr ftH2O oz/in2 g/cm2 cmH2O cmHg at mTorr dyn/cm2
