Arguments with '$' characters not parsing properly

[ricardoalmira89]

When you put two or more dollar '$' chars into an argument:

POC

#index.js
var argv = require( 'argv' );

let options = [{
    name: 'comment',
    type: 'string',
}];
var args = argv.option( options ).run();
console.log(args.options.comment);

The you do on terminal:
node index.js --comment="Hey, do you want some $$$$"

Expected result:
"Hey, do you want some $$$$"

Result:
"Hey, do you want some 114349114349"