Added __init__, readme, fixed build on 64 bit.
COSMIT in notebook
ENH simple_grid convenience function
ENH add function for arbitrary graphs with pairwise potentials.
ENH more examples
add exact map solver function, get solver status
start of build script for ad3

move lib to ad3 so examples can be run without system install
build_clib must be called before build_ext

Added __init__, readme, fixed build on 64 bit.

Improve setup.py, add Manifest.in

INSTALL remove spurious specialization, add fix for bdist_egg.