Melbournian bars vizualisation with leaflet and R

• scrape_data.py: retrieve informations about the melbournian bars from the OpenStreetMap api - based on the work of Julien Moura
• melbourne_bar_viz.geojson: data generated by scrape_data.py
• melbourne_bar_viz.R: vizualisation of the data using leaflet - Voronoï diagram, density heatmap