normalize_service

[kpcyrd]

Writing the first few modules that operate on scripts it seems that services are very commonly referred to as github instead of github.com.

Basically every module would have to setup a mapping, instead we could have a function that normalizes them. I have somewhat mixed feelings about that since it's sort of an unusual function to add compared to the others, but probably currently the easiest way forward.

normalize_service('Github') -> 'github.com'
normalize_service('instagram') -> 'instagram.com'
normalize_service('hackernews') -> 'news.ycombinator.com'

If this function turns out to be a bad idea we can still deprecate and eventually remove it again.