~ Name:
~ ~~~~~
~ out -- Follow logs/system.out file
~ 
~ Synopsis:
~ ~~~~~~~~~
~ play out [app_path]
~
~ Description:
~ ~~~~~~~~~~~~
~ Display the app_path.logs/system.out file's contents and wait for new lines to display.
~ If app_path is omitted, the current directory is used.
~
~ It is pretty much the same than a 'tail -f logs/system.out'
~
~ The logs/system.out contains the System.out stream when the application is run in background.
~