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] 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
Fixed version scripts + several path issues when path contains a space
Shelljs version bump 0.1.3 [Fixes issue where shelljs hangs when node isn't on path]
Code review changes
Updating newly added scripts to use @CORDOVA_NODE and ability to run from other directories
Fixed issue where local process obj was clashing with nodes process obj [debugtoken-helper]