do not explicitly call exit(0). fixes #21

A normally exiting PHP script will exit with error code 0 by default, so we don't need to explicitly call it in run()

Author: splitbrain

src/Base.php

@@ -97,8 +97,6 @@ public function run()
  $this->setupLogging();
  $this->checkArguments();
  $this->execute();
-
- exit(0);
  }
 
  // region run handlers - for easier overriding