Dump_From_GeoJson       returns a json-dump from a geojson file
FROM_GeoJson            reads GeoJson data
FROM_GeoJson_Schema     reads GeoJson data using a one-word-schema
Features_2Collection    creates a FeatureCollection dump from multiple
                        Feature geojson objects
TO_GeoJson              converts data to a GeoJson object
merge_files             merge json files (or any kind of text files)
                        from a directory
save_R_list_Features_2_FeatureCollection
                        creates a FeatureCollection from R list objects
                        ( see the details section about the limitations
                        of this function )
shiny_from_JSON         secondary function for shiny Applications
