Added code to expose the persistence_diagram class, the bottleneck_distance function and the point class to python. Most of the commonly used methods for each class have been exported. The constructor for point now requires that a data argument be provided along with x and y coord. This needs to be made optional. The constructor for persistence_diagram could possibly be rewritten as well.

set                             (libraries                      ${libraries} 
                                                                ${Boost_PROGRAM_OPTIONS_LIBRARY})

# Build compare-diagrams
add_executable                  (bottleneck                     bottleneck.cpp)
target_link_libraries           (bottleneck                     ${libraries})