Run phpunit in Lumen project

run_phpunit_osx.md

Now the phpunit cannot be installed via pear, but we can with composer global

Run this to install phpunit: composer global require "phpunit/phpunit=5.5.*"

Reference link: https://phpunit.de/manual/current/en/installation.html#installation.composer

Then to run the phpunit in Lumen project, just go to the root application folder and run this command:

./vendor/bin/phpunit