updates README.txt
implements phrase_extract
implements word_alignment
implement available_phrases
revise available_phrases
write test codes for phrase_extract.py
implementing decode.py
create application: jec_basic_sentence and twitter
modify word_alignment bug for set([]))
rm --cached :jec_basic: and revise .gitignore for it
revies .gitignroe
remove print in word_alignment
create phrase_extract function for database
modify loop_count and limit in jec_basic_sentence
create new db-related scripts
create create_phrase_db.py
create create_phrase_db.py
review .gitignore
remove some duplicated files
cp progressline