First examples

Check the Jupyter notebooks in https://github.com/eurostat/happyGISCO/tree/master/notebooks.

For instance, simple/dummy examples illustrating how to run the package are available: * a [simple call](http://nbviewer.jupyter.org/github/eurostat/happyGISCO/blob/master/notebooks/example_GISCO_services.ipynb) to the geocoding services, * a [basic use](http://nbviewer.jupyter.org/github/eurostat/happyGISCO/blob/master/notebooks/example_GISCO_features.ipynb) of NUTS vector features,