Enable streaming of sobjects and searchs

[jeffweiss]

I'd like to be able to do something like:

Forcex.Sobject.Lead.stream
|> Enum.take(300)

Should be relatively straightforward once the refactor from #3 is complete. At that point, very similar to streaming work I did for Tentacat.

[thbar]

Just curious at this point - did you investigate a bit on what's required to support that on your side? I'm casually thinking about using Elixir to stream via Salesforce PushTopics, hence the question :-)