Removed undefined constant ScriptHandler::NEW_STRUCTURE_NOTIFIER

Fixed #138
bug #145 Removed undefined constant ScriptHandler::NEW_STRUCTURE_NOTIFIER (pyrech)

This PR was merged into the 3.0.x-dev branch.

Discussion
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Removed undefined constant ScriptHandler::NEW_STRUCTURE_NOTIFIER

Fixed #138

The constant `ScriptHandler::NEW_STRUCTURE_NOTIFIER` was used on [`Resources/bin/build_bootstrap.php#L49`] (https://github.com/sensiolabs/SensioDistributionBundle/blob/master/Resources/bin/build_bootstrap.php#L49). This constant was temporarily created - then removed - during the development of the PR #118.

Commits
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284e1fa Removed undefined constant ScriptHandler::NEW_STRUCTURE_NOTIFIER