This tool processes markdown files from the training materials to automatically update "Go Playground" links with the latest code from the linked samples.
It will find markdown like the following and automatically update it:
The following link will automatically be updated
[markdown-playground-links](main.go) ([Go Playground](http://play.golang.org/p/X8oPoc-i9L))
The program searches for a link followed by a "([Go Playground](.*))" link.
You can use an empty playground link and it will be automatically populated with the right link.
Simply run mpl with a list of files you want to process.
# Update the links of the constants README.md
mpl topics/constants/README.md
# Using zsh wildcards, update all markdown files under the current directory
mpl **/*.md