corrected playbook create tool usage
[CB-3174] removed <plugin> element deprecation notice
[CB-4346] changed utils genbarname function to return string as per ticket description, updated README.md section on create command
[CB-3798] Shelljs version bump 0.1.3
[CB-3798] Provide support for optional localized node/npm/bb-tools

-Several script updates to provide support for optional localized binaries [node/npm/bbtools]
-Added support for overridable global CORDOVA_NODE env variable to point to node installation
-Added support for overridable global CORDOVA_BBTOOLS env variable to point to bbndk tools
-Run plugman via JS and not command-line
[CB-3798] Update checkreqs for blackberry-debugtokenrequest