modify directory structure
rename from sent_pairs to sentences in smt/db/createdb.py
remove progressline: created another package for progressline
revise createdb to use SQLAlchemy
revise twitter/test.py
revise stack decoder using sqlalchemy
revise stackdecoder.py using doctest
revise createdb and stackdecoder
implement future cost estimate in stackdecoder
add verbose in stackdecoder