Adding tags on Github

As described in a previous post, I am following the instructions posted on that blog post.
First, we add the collecttags.html file on _includes.
Next, we add that file in the header, head.html.
After that step, we can display the tags in the front matter of each post. In addition, a link was created to a webpage listing all posts using that tag. Next, we need to define those pages. In the blog post linked above, the author provides a Python script to generate these pages automatically. The addition of the cloud of tags work just as described.