chore(docs): Add phpctl to the examples

phpclt is a CLI tool that works as a set of Bash scripts for a container-based development environment for PHP and its tested using bashunit

Author: leocavalcante

docs/examples.md

@@ -23,3 +23,6 @@ A specification for adding human and machine-readable meaning to commit messages
 
 ### [Tito-Kati/fizzbuzz-bashunit](https://github.com/Tito-Kati/fizzbuzz-bashunit)
 Popular introductory FizzBuzz kata solved in Bash with **bashunit** as the testing framework.
+
+### [phpctl](https://github.com/opencodeco/phpctl)
+It is a Docker (containers) based development environment for PHP.