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!