Added documentation for the python classes Point and PersistenceDiagram. Removed the __sub__ method for PersistenceDiagram. Minor renaming.
Renamed BottleneckDistance to bottleneck_distance.
Renamed intervals iterator for PersistenceDiagram to points. Seems in better conformance with usage.
set (libraries ${libraries}
${Boost_PROGRAM_OPTIONS_LIBRARY})
# Build compare-diagrams
add_executable (bottleneck bottleneck.cpp)
target_link_libraries (bottleneck ${libraries})