fix to use syntax_trees_dir option
Merge pull request #50 from naoGreenTea/fix-output-dir-option

Fix output dir option
fixed README
fixed argument name
fixed message and used python 3.X style print
Extracted method: "check_and_make_working_dir"
Merge pull request #53 from niyaton/quick-fix-working-dir

Quick fix working dir
Storing syntax trees directory is now optional.
removed wasted statements
fixed README
Merge pull request #54 from niyaton/use-tempdir-for-syntax-trees-dir

Use tempdir for syntax trees dir
show java-parser update confirm when installing by setup.py
only show when hash value is different
Merge pull request #56 from yum-kvn/check-java-parser-when-install

show java-parser update confirm when installing by setup.py
use ref.commit to get commit from ref
Merge pull request #58 from niyaton/fix-convert-of-git-svn-repository

use ref.commit to get commit from ref
fixed install command
Merge pull request #59 from niyaton/fix-readme

fixed install command
use dict.
use csv writer
extract print_csv function