v7.4.5

• Not to scroll to top when click page navi. fix Issue #9.
• Make sure to display the sub info.
• Change default value of lang option to en (English).
• Move plugin files to each directory.
  • dist/*.js => dist/js/*.js
  • dist/*.css => dist/css/*.css
  • dist/*.php => dist/php/*.php
• Improve demo page.