a comment system based on github issues
1.import theme style.
<link rel="stylesheet" type="text/css" href="//html50.github.io/issues-comment/theme.css">
2.import js files.
<script src='//html50.github.io/issues-comment/issues-comment.js'></script> //core file
<script src='//html50.github.io/issues-comment/js/marked.js'></script> //render Markdown
3.set your issues URL and initial issues-comment.
//this will generate HTML and document.write() to where you put these lines at
<script>
issuesComment.url = 'HTML50/issues-comment/issues/1'; //modify this to ':your_ID/:your_repo/issues/:number'
issuesComment.init();
</script>