update readme, long_desc
incomplete index of a polygon now returns a line
Merge branch 'master' into documentation-project
MultipointBase.to_vtk now takes either a string or a file object
to_geojson methods mow take a file or a string
Merge branch 'master' into documentation-project
add Multipoint.within_bbox and tests
Merge branch 'master' into documentation-project
partial tutorial as a notebook