implementation of a new result type: SearchBotDeviceInfo

[DamonOehlman]

A potential implementation that addresses the request in #126

From an implementation perspective I've implemented a result class - SearchBotDeviceInfo which adds the bot string so that the result of the detection of the UA:

Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

is:

{
  name: 'chrome',
  version: '41.0.2272',
  os: 'Android OS',
  bot: 'Googlebot',
}

In terms of being able to determine that we have captured one of these new types of results, either the bot attribute can be tested, e.g. typeof result.bot == 'string' or using the instanceof check given the result is a class. Using a truthy check on the bot attribute will also pickup those instances of standard search bots that aren't simulating devices also.

This is starting to increase the complexity of the result type, and I'm not really one for doing instanceof checks so I think it might be time to add a kind discriminator also.

I'd be keen to bump major on this too if we decide this is a good way to go.

[5punk]

LGTM 👍

[DamonOehlman]

Merged this down but will add the discriminator before releasing a new major version.