Added index4.html, price.csv and nz_gxp.json
Merge pull request #1 from NigelCleland/Folium_script

Using Folium to make the data binding easy
Deleted old index.html, renamed index4 to index
Update
Added network data
Got gxps working in index2.html
added network topojson file for first attempt to plot network
Added gxp mapping notebook, added all gxps (index2.html)
Toggling on/off of GXPs now enabled
Added filtered gxp file
map mods