Add support for user agents

[LuRsT]

How about another argument for adding custom user agents?

[yaph]

Making the user agent configurable sounds like a sensible thing to do. I found an example on how to do this in PhantomJS in https://github.com/ariya/phantomjs/wiki/Page-Automation

var page = require('webpage').create();
console.log('The default user agent is ' + page.settings.userAgent);
page.settings.userAgent = 'SpecialAgent';

[LuRsT]

Yeah, doing it in phantomjs is not the problem, I think the real problem is cluttering the python script, since adding one more option will create more possible commands.

[yaph]

Agree this can get a bit ugly if more args are added in the future, but adding the user agent as an argument makes sense anyway.