testing self-bootstrap capabilities
PHPUnit and Behat have been set as core dependencies.
Added the --init to create a sample Amkfile script
containing the :hello-world task.
Fixed a typo with the Getopt component in the TaskArgs (it's Getopt not GetOpt)
Removed dependency on Zend\I18n (i.e. no need to compile PHP with _intl_ support)
Merged changes suggested by Gavin regarding self-installation and project initialization

Conflicts
	bin/amaka
	composer.lock