Add comment.sql file
Add create comment tabale statement
Merge branch 'master' into temp
Add a demonstration example
Rename example of  show_comments.php to index.php
Add get_comments.php file
Merge branch 'master' into temp
Add config with example
Merge branch 'master' into temp
modify gitignore file
untrack db_config.php
Correct include path of db_config.php
Tomments example complete