Update 'README.md'

README.md

@@ -91,7 +91,7 @@ pip install vsc-base vsc-install
 
 pip install cffi geos netcdf4 cdo geoval cartopy iris matplotlib ipython pyproj scikit-image pillow pandas xarray joblib six gdal shapely rasterio geopandas pytest boto3 salem motionless progressbar2 fiona geopandas configobj https://github.com/matplotlib/basemap/archive/v1.1.0.tar.gz
 
-pip install spyder python_qt_binding python-qt Qt.py ecmwf-api-client pybufr-ecmwf 
+pip install spyder python_qt_binding python-qt Qt.py ecmwf-api-client pybufr-ecmwf PySide
 
 module purge
 ```