Improvements to options parsing

[wyattbiker]

1. Ability to make options required:
   Example: the --tel option is required (not just the argument)
   myapp.js --tel=555-555-1234

2. Also required ARGs should remove 1st = and alltrim(spaces) of argument
   e.g. myapp.js tel: '=555-555-1234'

3. Also a required ARG should not take the next option as an ARG
   e.g.

myapp.s --tel -v

Currently it accepts it as an argument shows {tel: '-v'}
of course this could cause an issue if someone wants an argument that starts with '-' or '--'
so maybe it can be escaped (or they can use =)
E.g. myapp.js --tel=-v

Thanks!