Merge pull request #24 from begeeben/13_publish_to_npm

 Publish to NPM #13
Refactor graph generator
Add description for new contributor
Merge pull request #27 from dwi2/readme_for_dev

Add description for new contributor
Fix generated console log message error. Replace space with ','.
Merge pull request #28 from begeeben/fix_console_log_error

Fix generated console log message error. Replace space with ','.
update README.md
Merge pull request #30 from mpizza/fix_readme_typo

update README.md
Fix server http document path error.
Merge pull request #33 from begeeben/fix_http_path_error

Fix server http document path error.
Prevent force layout during node movement
Merge pull request #25 from shamenchens/GenerateGraph-2

Refactor graph generator
Revise js source parsing.