Default writer for Info message must be std\out instead of std\err.
Use colors in scripts\\runner messages, close #264.
Help is now displayed if atoum receive no argument and no default arguments are defined, close #265 and thanks to @Hywan for the idea.
Useless PHP_EOL.
Useless PHP_EOL again.
Migrate to atoum namespace instead of mageekguy\atoum