webinos_pzp.js updated to use optimist to parse command line arguments

All the options and default value remain same.

Jira Issue: WP-581
Define command line options once

Combine command line option description and defaults. Always prefer
command line options before options from config file.

Jira-issue: WP-581
Merge pull request #3 from aldafu/WP-581-command-line-args

Define command line options once
Policy and Widget start

Jira Issue: WP-581
Merge pull request #419 from habibvirji/WP-581-command-line-args

Wp 581 command line args