Add subscription and payment terms

[fabdurso]

No description provided.

[vbrazo]

I like these methods but I don't know if they should be located in Faker::Internet. When I see payment_term and subscription_term, the first thing that comes to my mind is subscription business models. They're becoming popular and nowadays most companies are using this revenue strategy.

What do you think about adding Faker::Subscription? It could contain these fields:

• plan: Gold, Silver and etc
• status: active, pending and etc
• payment_method: credit card, debit card and etc
• subscription_term
• payment_term

[vbrazo]

@stympy I know that honeybadger.io has a subscription model. What do you think about my suggestion?

[fabdurso]

@vbrazo I wasn't totally sure about Faker::Internet, but I decided to add the methods there since they are also related to "internet" subscription models.
Faker::Subscription is certainly a better idea and I will try to work on that. Thanks!