Merge pull request #2 from arekusuri/dev

change private to protected for 2 functions and clean up space at end of...
Add development into README.md file
change format
fix description about punctuations
add more description about packing
adjust format
fix format
Merge pull request #3 from arekusuri/dev

Dev
add description about bin command
Merge pull request #4 from arekusuri/dev

change sample file name; fix wordfreq.sh about current path
Update README.md
move config to code; split abbr analyizing to class