Updated phpunit version

In PHPUnit version 3.7.13 the command-line run results in an error
due to a change in PHP_Timer usage (static vs instantiated).

Fatal error: Call to undefined method PHPUnit_TextUI_ResultPrinter::timeSinceStartOfRequest() in vendor/phpunit/php-timer/PHP/Timer.php on line 150
Updated travis to test against PHP 5.5
Removed greet command from nut
Removed unused statements and whitespaces
Merge pull request #249 from Future500/patch-1

Updated phpunit version
Merge pull request #252 from toin0u/patch-1

Removed executable bit
Merge pull request #254 from toin0u/patch-3

Removed greet command from nut
Merge pull request #255 from toin0u/patch-4

Removed unused statements and whitespaces
Merge pull request #253 from toin0u/patch-2

Updated travis to test against PHP 5.5