"get_follows" should get all follows by a user

[garyking]

There should be an option for users. get_follows() to get all users that a user follows. The Twitch API limits each call to 100, but you can use the offset key to technically get all follows.

So, this library should simplify this process, by adding an option. If the option is enabled, then the library will get the first 100 follows, then the next 100, etc. until they are all retrieved.