Merge pull request #1 from amueller/master

Typo in example comment
Merge pull request #2 from amueller/master

Python bindings.
Implemented BUDGET factor.
Added factor for sequence compression.
Corrected a memory leak in GenericFactor caused by configurations not being always deleted.
Updated change log.
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