Netflix/RxJava — pull request #934 by davidmoten (2014-02-27 04:22:41+00:00)
Title: add Observable.startWith(Observable) method and unit test

add Observable.startWith(Observable) method and unit test.

I would like to avoid breaking method chaining when want to startWith an Observable rather than just an Iterator or specific values. This is a very minor change as under the covers startWith uses concat anyway but it is significant in terms of code readability and is a natural completion of the startWith api.